So I enjoy the roles, mid and adc. Mid is fun but it gets boring after a few games. So I go to ADC. But I heard ADC is not good to main in lower elo's. So the question is can I main adc and still climb with trash supports? Should I force my support to do some kind of easy supports like raka or janna?
Any help would be appreciated.
just play the broken ones. and then you are set.
Playing an ADC is going to be a challenge because they are very team dependent. One way you can get away with ADC without a team is maybe mobility ADC like Lucian, Ezreal, and Tristana basically.
Lucian is difficult to get used to in my opinion, though he offers great burst and with his passive you can keep you relentless pursuit up quite well once mastered (I don't know how to do it but my enemies sure seem to). He can poke from outside his auto range with every ability except his dash (obviously), and he's generally strong all game.
Ezreal is a safe pick ADC so long as you are good at using his blink to gap close/escape as well as kiting your enemies and dodging skillshots. He isn't a DPS ADC but more of a poke ADC, so if you get good at landing those mystic shots then you'll be fine. His Q offers great poke with a sheen item (iceborn gauntlet/trinity force) and combined with muramana can offer a decent burst as well as a global ult for escaping enemies or sniping dragon/baron/buffs.
Tristana is a more of a hyper carry with a gap closer/escape and a self peel magic damage ult. She is great at taking towers due to her Q and E. Her dash also resets on kill, assist, or fully stacking her E on an enemy champion. CSing with her is a bit tricky at first, so you might need to practice getting used to it and try not to panic when the explosion causes you to miss half the wave. However, she has no abilities to poke with. Throwing an E on someone does some damage, but not a ton unless you stack it up. Once stacked though, it offers great burst which, since it delays her damage, can surprise an enemy who thinks they are winning a trade.
Or try utility ADCs like Ashe, Sivir, and Jhin. They all offer stuff outside of their damage that, even if they are behind, are still useful to the team while also offering tons of damage if ahead. All of their ults can help their team get kills even if you are the one dealing the last blow. Sivir and Jhin still have waveclear if behind and Ashe has a perma slow kit for great kiting potential.
Another thing to do is focus the ADCs that are OP right now. Jinx, for example, is really strong with only 2 items and just gets progressively stronger all game. Her mini gun offers great tower taking and attack speed steroid while Fishbones offers great AOE and long range damage. Her passive and chompers though are her only escape abilities, so positioning is key on her yet she requires a semi aggressive play style. Plus her global ult is an execute so, like with Ezreal, you can use it to get kills or steal dragon/baron/buffs while being no where near them.
Outside of the general "use this champ", other knowledge I can offer is learn to play the game. This may sound harsh but people still don't quite get it. Objectives are more important than kills. Killing a tower that will never re-spawn (outside of Azir passive) means loss of map control. Getting the cloud drake, while seemingly useless, means more power if you get elder. Getting a inhib means less pressure on the rest of the map since someone must deal with the super minions or risk losing nexus towers.
CS is crucial on everyone, but especially on an ADC. You need as much gold as you can get as fast as you can get it. If you get kills, cool. If not, try to have more CS than the enemy ADC. I've won games by simply starving the enemy ADC of gold by freezing the lane out of their range and chunking them if they came up to get CS.
Learn to trade properly. ADCs want CS, so they will tunnel on the CS, which is a perfect opportunity to poke. If you can manage to look at your ally minions and see when one is getting low, you can step up and auto them when they go for that CS.
Abuse level 2. After the first wave, bot lane gets 2 after the melee minions are killed. Try to keep the lane even for the first wave but rush killing those 3 minions and be ready to go when the last one dies. Unless you are an Ashe and need to stack up her Q for damage or with a support with no CC, this is a great opportunity to blow some summoners, force a back, or get a kill.
Also learn to play from behind. So many people know the "I must carry the game" type playstyle and go ham constantly despite being at a disadvantage.
If you can't CS cause the wave is pushed, take the Krugs if your jungler isn't in bot side jungle and CS when the waves comes to your side. The enemy just took your tower, freeze until you see them again. If they are mid, push the wave and go mid to help defend. If they come bot, ping for help.
One thing I'd suggest is to play support once in a while. That way you understand their side of the equation too and what your support may expect from you.
If you want to main adc just play one of the top 3 and you will probably be fine. If you want to play a different adc you are going to have to play them at a much higher skill level to climb. Your best bet for actually climbing would be to play Mid, but if you just want to get better ADC is a good choice. Playing ADC is basically forcing yourself to learn how to play from behind.
Playing ADC in the lower isn't THAT bad i'm S2 RN and have been maining ADC/jg. I've been able to carry games with it as long as i have an ok support, but when i get a bad support(like a blitz who didn't hit 1 hook ALL FUCKING GAME O_o) i can still have a shot at carrying the LANE but maybe not the game. I mostly play 
and get stuck with trash supports a TON, the way i get around that is by just last hitting and farming up then poking with Q if i can but not TRYING TO GO AGRO. If they are at 200 health and under their tower not backing then yea maybe you can try and dive that, but at the same time you can keep them low and force them to miss farm. With a trash support just don't die and play passive, with a good support(doesn't have to be a GOD just better than the other team's support) then you can go a bit more agro than normal. Over all i don't find playing ADC in a lower ELO is that bad, you just gotta find an ADC you like playing and play them a TON in norms to get your mechanics down to out play. Even if they aren't that good RN(like 
) you can still win a lane as long as you know what your doing.
With the right ADC, yes.
Avoid Lucian and Draven though. Kog and Vayne are a bit of a risk because your teammates will not protect you like they should.
Play what you like to play
It's easier to improve at a game if you enjoy playing it, if you enjoy playing ADC then you will improve at it
As a supp main, I highly recommend not pushing your support to do anything they don't want to. Personally, I take anivia supp, and bot lane generally carries the game (I never take kills unless my adc is useless, so teh adc is usually 13/2 or something). Also, the supp might not be that great at an easy supp, even if it is easy. Personally, I suck and janna, since I have played her about 3 times, and yet I am a god morg/anivia/blitz supp.
About getting the trash supp, it is the same thing when you main supp - you have two choices: find a good duo buddy, or just take your chances with soloque.
