I just had 6 games in a row where the entire team fed

I hit my silver 3 promos 2 days ago, I lost the promos because I got fed in top lane as both games but literally every single person on the team went negative in score. I then lost 4 more games and demoted to silver 5. I was prepared to uninstall league of legends but I decided to give it one more chance. That is when I get auto filled support and get the game in the screenshot above. The loading screen was over 5 minutes and 50 seconds (I know because I started and finished watching this video while waiting https://www.youtube.com/watch?v=QkK6GmQTnvc) because took forever to connect. He got to 100% we loaded in but he was still dc'd. I started a remake vote at 3 minutes and their duo partner says don't remake and everyone votes no. immediately starts losing top after the vote, then also starts losing hard. It's 10 minutes and they are already in our base and reconnects and starts feeding. I think I'm done giving this game chances if Riot cant make a working matchmaking system thats fair for everyone. Every game I play is a complete stomp because the enemy feeds, or my team feeds. No game should be like that, it should always strive for an even match up but it never is and I personally haven't had an evenly matched game since December. As much as I want to see Pyke when he comes out, I had to uninstall this game. It's turning me into a toxic person and that's not something I want to be.