Can we finally look at matchmaking to make it more balanced ?

Matchmaking of this game is the reason I stopped playing ranked few months ago. Same in the season before and before that. I just don't have the nerves to play 2000 ranked games to get to elo I deserve. I went from plat 3 after placements to diamond 2 with roughly 150 games and 60% winrate. Then of course autofilled teammates happened and literally unwinnable games over by 10 mins, got me back to diamond 5. I researched a bit and this happens often and to a lot of people, and if you don't wanna play thousands of games you will stay in d5 hellhole. The reason is because when an autofilled d5 adc main goes top against d1 top main, it's no mystery who will feed and lose the game. That was the case in one of my unwinnable losing streak games. How is that even possible for a d5 autofill to go against a d1 main of that lane. Who will have fun in that game and how is that fair matchmaking ? Few times in d4, I actually played against masters and challengers. Now if you tell me "well your mmr is high so hurr durr". I don't care, if you play me against challengers, then you better give me a pretty big mmr boost and lp if I win, but nope I got the same lp as always, because team mmr was ""balanced"" by mixing 500 mmr difference players. That is NOT a fair ranked game any way you look at it.

Don't downvote me because I'm talking about diamond and you're jelly, same shit happens in all elos. I just want to play a game where after checking opgg, I know it wasn't lost in champ select.