How incompetent can these players get?

Incompetent: not having or showing the necessary skills to do something successfully. (This discussion does sound selfish as you don't know whether or not I am the one that causes these people to become incompetent, that's your choice)

  Over the last 2 seasons, I have seen the repeating pattern of at least one person on my team ALWAYS saying "ff 15", "gg we lost", "You're fucking making us lose the game singlehandedly", "I have to carry these fucking monkeys" or any other iteration of that (eg. Sarcasm,*while running down top into the enemy team* "My Bad!"). I get that you could have been in a game where a situation happened that cause you fucking tearing out your hair but can you at least have some decency to know that it's always different the next game unless if you get paired up with the same people

 And here's the thing, they always start the game in a "Let's win team!", "They have good scaling but we have a better teamfight guys!" mood, planning for invades or asking if they can get a cheese gank. Then after one of their requests declined, they absolutely lose their cool and start harassing whoever is on their screen, and then they say that they can ONLY do something WITH that person and that without them they will lose. Ok maybe you do NEED that person to do something with you, but don't constantly keep asking for them and expect them to only help YOU. They have to help the other teammates too you know. You're never a solo carry at the start of the game that needs peel, heals, and shields to be able to 1v5 and without those you're useless.

 Let's say the jungler was walking up topside to clear his/her red or blue buff, then a dive happens top and mid gets lane ganked at the same time. (There can be a vice verca too) The jungler goes top and gets two kills but mid dies. 

Mid: *pings bot "Enemies are missing") Mid: "why didn't you ping or follow bot?" Bot: "we didn't have vision on them" Mid: "jg why didnt you counter gank,?" Jg: "Top was closer and was getting dove" Mid: "he's 0/2 and im 3/1 why would you help him, he lost lane already, im winning lane" Jg: "he can still do damage and tank for us" Mid: "he doesn't even do damage, I do damage" Jg: "yeah but he can tank for us and provide cc" Mid: "he won't even get enough gold to tank, he'll just get one shot" end of arguement mid dies again to gank after overextending" Mid: "hey can you fg help me?" Jg: "you were overextended and had wards on both sides, how the fk did you die" Mid: "cause i was typing how that you're a bad jungler for not fg ganking my lane" Jg: "You've always been overextending, so i can't gank" Mid: "then just fg dive them dumb A" ADC: "can you guys shut the fk up and play the game" Mid: "can you shut the fk up and farm, how'd you even lose lane 10 mins in?" ADC: "cause jg didn't gank for us after 1 gank" Mid: " well then better ff 15 before jg causes us to lose the game singlehandedly" BLAH BLAH BLAH BLAH BLAH

25 mins in game while enemy team has baron buff and 2 inhibs" adc went afk after they died for the 6th time Mid: "'He can still do damage and tank for us' he's 4/5 and only has 3 items, see what happens when you gank a losing lane instead of your carry? I could have carried this game if you didn't fg gank top that time" Jg: "I already told you that you kept overextending, so i can't gank" Mid: "I already told that you can fg dive them" Jg: "You died so much that you couldn't even get enough gold to do damage anymore," Mid: "You died more than me, so you gave more gold to the enemy team than me, and you didn't even group with the team" Jg: "You tried surrendering 3 times, and they all failed, can you at least try to play seriously?" Mid: "I was playing seriously before you stopped ganking for me" Jg: "since when do i have to babysit your A*" Mid: "since when do i have to remind you that i'll carry your bronze A** if you ganked for me" Jg: "there are other lanes that need ganks too you know" Mid: "they both lost lane before me, so they're useless, i had to carry this 4v5 at 13 mins, this game is already lost " Mid goes afk Jg: "welp it's just us now" support runs around the map game ends 3 minutes later (END)

 One incident that didn't go their way, and then they give up instantly. I can give so many more examples in games I have personally experienced.

I get it, when things don't go your way, you would always get disappointed or angry at them for not obeying, but take in the fact that they are always in different situations and that they need different care depending on how serious it is. Everything doesn't just revolve around you, and just because your team doesn't seem that way, it doesn't mean you can just give up and decide that this game is lost. The game can go on for however long you want it to go as long as you keep trying and paying attention. 
 It's just too many people, they have so much confidence in themselves, then they give up, they give up so easily it's like they were an elementary school bully that punches their victims on a regular basis and when they get punched they instantly start crying and tell the teachers a fake story of what happened that favours them as the victim.
They play the victim, and act all innocent, they can' accept the fact that they're the reason ONE OF the reasons why they lost.

 I haven't experienced it myself but I have watched videos and streams where just because this person took this person's cannon minion or took their kill, that person just immediately gives up and starts griefing. They don't even care if they get reported cause they know they need a record of reports to get banned, then they continue this behaviour over and over again.  
 
  "Look, we still have time, we don't even know the outcome of the game yet, I don't care if I'm 1/3 and losing lane, I can still help, mid's doing good so why are you giving up already? One incident so early into the game doesn't cost you the game immediately, just think about it this way, for every minute that happens in your game, there's an alternate timeline that an incident goes well, better, or even worse, and you're the one that decides which timeline you choose, and yet you choose the worst one because you didn't get what you want? You'd give up just because this didn't go your way? You'd decide to lose in a game where you can win? Why? Do you just want everyone to equivalently suffer like you just because they didn't listen to you? How selfish can you be? How incompetent can you be when it comes to winning a game?  You're a quitter because you're not getting help? Then why don't you help yourself?"