Can Riot games fix their games instead of introducing a new champ every 4 months?

On February 15th of 2019, I played 7 games ranked games, look me up if you need to confirm, anyways I am your average player with an average KDA and I love playing League of Legends like the mechanics and the champs sometimes I play the game everywhere, but enough is enough. I played 7 ranked games today and out of those 7, 3 matches were filled with inters and rage quitters. *When I played Zilean Support, my allied kog maw rage quit after giving first blood to the enemy team.

*And in my last two matches, I had a tryndamere top who inted his lane and fed the garen, we kept telling him, stay under tower and would do the opposite and push the minions to garen's tower.

*Lastly in another game, I had a Garen top who did the same as the tryndamere and constantly inted to his opponent to the point where Jax had 183 cs to his 67 cs. I love the game, but I can't take it anymore and I hope that Riot Fixes the MMR. While I reported them, the enemy team laughed and said, "Hur Hur not reporting them cause they MVP". I posted my op.gg for you all to see the in depth results.