Ranked MMR Problems

Currently, I am Bronze V and I just can't climb the ranked ladder to Silver because it is a long stretch and I am stuck in elo hell. No, this post will not be a rant about me being salty because I am in Bronze V. I think there is a problem with my hidden MMR. I keep hovering between Bronze V and Bronze IV because I can't gain LP while maintaining a positive winrate. In Bronze V, I gain 20LP per win and lose 25LP per loss, but I can manage to win five games in a row and get to placements with one free win granted. When I get to Bronze IV, I gain 13LP per win and lose 25LP per loss. When I complain about this to my Silver and Gold friends, they jokingly say, "just don't lose," but seriously, there is a problem. I heard that when queueing against lower ranks, you win less LP per win and lose more per loss. I think the problem is that playing against Bronze V when I get to Bronze IV is only considered a small victory, but losing to them is a big loss. Riot, please fix this problem. As others are gaining 25LP per win and going up divisions in 4 wins, I can't even grind 9 wins in a row for 12LP each. Please fix whatever the issue is. Is it my win/loss ratio. I need an explanation at the very least or I will have to wait till next season to play ranked without this fucked up MMR LP system algorithm used for me.