why am i earning less 14 lp and losing 20...fix the mmr riot.

ever since division 5 was taken out it's been impossible to climb something had to throw the mmr system out of loop i lost two game and won 5 games in a row and now it's protecting me from demoting and im at 40 lp when i was at 85....from losing 2 games? and yes i know about mmr but there is no possible way my mmr has been messed up for 3-4 weeks when i win majority of my games.