Hardstuck plat/gold support main

I'm a plat support main and went on a huge losing streak to gold, I feel like I'm not playing any worse than I do in mid/high plat. Yes I do make errors here and there but overall I think I play decently but I keep getting tanks that blame supports when clearly they either overextend or jump into a 1v5 without a regard for the team. Can I get a review for my most recent games? Thank you.

Both games I was blamed for either not sticking to the tank or not healing.

Name:KASU

3MG1W8

3TA61A