Loose too much lp and gain a sprinkle with pretty good ratio

So at this season start I was like gold 3, I managed to reach diamond V not long ago with a total of 499 ranked games (Lets say 500). While in platinum 1 struggle I was getting a decent amounts of Lp like 20 for a win and -20 for a loss (It seems fair), I wanted Diamond very bad so focused a bit and won a crazy amount of rankeds in a row and still am, since diamond v 0lp I was getting only ¬15lp per game, I managed to win games until 96lp not long ago, played another one, lost and it took -26lp from me while since diamonv V 50lp I was getting only 12lp+ and the funniest part is that I actually have 30+ more wins then losses which I anchieved pretty fast with good kda's and etc, it seems that the higher I go the more LP I loose and less I get, this system needs some repairing because it completely shut downs people who are not smurfing but are increasing they're elo. I do understand how the system works and that I need to have a bigger win ratio but at this moment I have over 500 ranked games, I'm completely shut downed from gaining ELO, I don't want suggestions but I want oppinions about this system, do you guys have simillar thoughts?