I feel you man. When I hit 8k I wanted to get a Smurf so I could just relax a bit and not have to worry about losing mmr and dropping back to 7k. Then I decided that was insane and to just play for fun cause nobody cares. I now regularly sit around 7.5k and I never worry about my MMR.
I don’t cope as much as I seethe that the most braindead support in the game is also the most OP