People need to realize that just as damage items are Combat-items, Defensive items such as Armor, MR, HP, shielding, etc. are ALSO combat-items. They increase combat EFFICIENCY, not by increasing your damage, but by using your raw damage already with increased survivability.
You will reach a point in the game where defensive and offensive stats start to become imbalanced, and that you may have TOO MUCH offense, and not enough defense, resulting in combat DEFICIENCY. You must have a proper balance between the two, as you definitely increase your strengths... but even weaken your weakness. This is why bruisers wreck assassins 1 on 1.
In order to combat DEFENSIVE items, one needs to buy defensive items as well. Sadly, assassin-players like you don't have much variety for defensive items besides 
, etc. Either way, building defensive doesn't always help, sometimes going a more penetrative approach (Such as Black cleaver, or Last whisper) may help as well. **It's all about killing them FASTER than they can kill you! **
League runs on a rock, paper, scissors metaphor. Rock(Tank) beats scissors (Assassins), Scissors beats paper (Carries with High damage, but not enough defense to survive scissors), and paper beats rock due to them being able to kill them faster than the opposite.(Maybe).
Bruisers who build armor are **SUPPOSED **to beat melee assassins, as they have the necessary defense ( And probably CC, as most bruisers come with some sort of cc) and enough base damage to take down the assassin. This is only to "balance" out the game. Things that low ranking individuals cry about. Stuff like "It's too op, i can't do anything against it!", when in reality, if it wasn't for that champion you're up against, the champion you're playing might be considered "too op".
Anyywayyyss, mages are meant to take on a different damage-type approach, just like there are Anti-AD assassin bruisers, there will always be ANTI-AP assassin/damage bruisers. (Such as Galio, a very underrated champion, for example)
Assassin mains are meant to kill mages in order to balance out the game again.
So just a note, those "toxic armor spamming champs" aren't toxic at all, it makes the game very healthy.
is such a fun champ for all other enemy laners. its just 
and 
who ruin the lane.
and 
laning phase is super healthy!!!!
