so the double super tank is the new bronze meta?

I hate tanks, i hate them more than i hate teemo. I hate them more that i hate anything else in this game. It seems however that the new bronze meta is the dual tank. All my ranked games i face tanks, tank top lane, tank sup, or tank jung , tank top or tank jung, tank sup, its madness. Sion, cho gath, alistar, some of the most annoying to fight as they have some decent cc too.

The problem is i can't beat them :( i always do bad against tabky comps mostly because i usuall play a tank myself! That means i HAVE to depend on my team's damage in order to bring them down, and my team's dmg is never there, if i adc which is my secondary role, i still can't do much when i have to face two tanks. I know tanks aren't op atm but i cant really do much against them.

Vayne is a good answer but takes alot of time to build, also vayne is countered hard by the currently most played ADCs like graves or Caitlin.

I need suggestions on how to deal with extremely tanky comps.

Which champions have natural armor pen or something to bring them down fast?