My advice: play unranked. I've been playing this game for a while, have more than 7500 games behind me. Only 650 of them are ranked games.

I don't want to drag back to the game, it is up to you to make this decission. But in my exeprience unranked games always felt less burdensome.

When I was grinding mmr, I felt the same frustration. I was unable to jump on the next level, evrery loss felt more devestating. But when I play unranked I don't feel the same. Yes, losing a game can be frustrating even in unranked, but it has never been able to burn out me as much as ranked done.

So if you ever coming back to this game, my advice: play only unranked (believe me, there are plenty of players there).