300 MMR LIFE IS ROUGH

Hey everyone, as you know, ranked placements have begun and people have started to surge outwards. Anyways, unfortunately for people who used to be bronze knows, we were mostly put into Bronze 5. However, I am in 300MMR, and it is a struggle everytime I play norms because the people are always silver+ and I suck. I get reported 90% as unskilled, and I want to learn how to play better, and escape 300MMR(close to falling down to 200). Suggestions?

EDIT: OMG LOST SO MANY GAMES. My MMR is now less than 200. Everygame, is 3 minute wait.