LoL lost playerbase /reason why solo queue is no longer division balanced/

I think it's pretty simple why all ranking divisions fails are happening. Alogrithm to matchmake will find you match in 3 minutes. it was working with huge playerbase, the missing people were only a little bit down or up in elo. But LoL lost palyerbase so the algorithm is matching you with more and more huge gaps. People say that it was because of the diamond IV bug but hoenstly it's happening in all elo. I think that ELO needs to be reverted for everyboy to preseason changes. I've dropped from diamond IV to plat IV bcs you simply can't win if the gap close between your team and eenmy is too high. Also some people were just lucky and now have rank that they don't deserve. I had diamond for two seasons. I don't paly worse. there is no reason for me to drop so much.