What is the REAL counterplay to this?

I don't know if it's just me, but I feel like there are so many champions i have to worry about during the banning phase because there are so many options for people to roflstomp the game and ruin the fun. So, with that being said, you can't ban every champ you'd like. So of course, you're always going to have that one person that says "i want a free win, so let me abuse insert any sated devourer champion here" or any other bullshit freelo champion.

So i have to ask. What is the real counter play to these situations?

Sated devourer Tryndamere: What exactly am i supposed to do to him during a teamfight? He pretty much deletes anything in his path and his god awful toxic ulti keeps him from not taking out a couple of people with him. CCing him works but keep in mind, there is also 4 other people that are trying to kill you. What do you do to stop this? I play a lot of sion but he can easily get out-dueled early game by anyone especially Tryndamere. I build really tanky and i find that i can't even soak up damage from him because he just MELTS my whole life bar. I've tried doing a lot of the going into the enemy's jungle and take their camps before they get sated devourer type of things but... It doesnt really feel effective.

Sated devourer Shyvana: Why is she able to build full tank and still be able to chunk away all of my health. She's almost unkillable late-game and it seriously takes a lot of effort to kill her before she clears your team.

Sated devourer Kayle: People laugh when i'm the team captain and i ban her. It's almost like people have never seen a sated devourer kayle before. She can carry the team by herself and can easily kite with her ranged abilites. Her obnoxious ult, once again, prevents her from dying. The ultimates that prevent one from dying is seriously detrimental to gameplay because Kayle leaves a HUGE impact in teamfights before dying, same with tryndamere. Magic resist doesn't even feel like it does ANYTHING to this champion while sated.

Sated devourer Jax: You pretty much get the point of the sated devourer stuff

Moving on,

Vayne: As expected, if you build tanky against her, it doesnt work at all. Those reading this understand why. So what are you supposed to do? She is a tank melter, an adc melter, a jungler melter, a mid laner melter and a support melter. I always say to myself, FOCUS THE ADC IN EVERY TEAM FIGHT. This obviously works for every other adc in the game. But Vayne's ultimate prevents this mindset from being relevant. She disappears for a couple seconds and reappears only for you to see that she's 50 feet away and able to stun you against a wall and get that #thirdsilverbolt on you and ruin your life. What is the real solution, or what is a build that is proven to be effective against this champion?

Riven: I don't have a problem with this champion. But one thing i do have a problem with is that i've shut REALLY SHITTY Riven's down before. But laning with these resourceless champions ruin the gaming experience. They spam abilities like all hell, and have nothing to worry about. Especially Riven. Because she has LAUGHABLY STUPID mobility. I can't even land a successful gank a lot of the time because after i've used all of my CC, she just flashes or just simply dashes away. And when's the last time you've seen a riven use a basic attack? You don't. The whole game with Riven players consists of jumping around the map like a god damn jungle monkey and praying that you can rush hydra fast enough to solo carry your team and say "gg ez" by the end of the game. How do you fight against a moderately fed riven. Because that's literally all it takes to be destroyed.

tl;dr: Sated devourer ruins this game and should be deleted. Tryndamere and kayle have toxic kits, Shyvana tanks while doing insane damage, Vayne QQ, Riven QQ thread