I think the best solution to fix this game is making more champions have a high skill requirement

A higher skill requirement and stronger mechanic work would do wonders for this game. I mean take Yasuo for example. A bad Yasuo is very distinct from a good one. He takes time to learn and those who can't play him are easily killed(meta and balance rates at the time not included). Then you take morgana, for example, and she has no skill requirement at all. Anyone who picks her up won't be spending weeks to learn how to play the game. Her dark binding is super easy to land from my perspective. Does a cool 600 damage mid game, Stuns the enemy, gives the team a free kill basically. Her shield takes no skill and neither does her dark pool(I don't know the pools real name, but I won't bother to learn it). Stun, pool, shield yourself, press r, and tada. To me that is just super easy.

There are a lot of low skill required champions who do to much damage without much risk in my opinion. Gate their damage or make them more complex to play. Take lux, her range is super ridiculous. Cast out what you want from far away, land or don't, it doesn't matter. You have a lot of utility and enough damage to at minimal ward off anyone who comes at you. And I know Riot wants to appeal to more casual players with these super easy to use champions, but it feels bad to die to people who actually have very little skill, only a super easy champion. Lux may be a bad example, but there are plenty of starter champions who take little skill to learn and it kind of makes this game meh.