Is LP messed up? Having issue climbing. Don't know what to do.

For the last few seasons, I've been plat. At the start of this season, I was playing stuff that I wasn't good at. Also, it wasn't that good in meta but just having fun+some bad luck. I started trying and went from silver 2 to gold 3-4. Even after having massive win streaks and hard carrying, I get 14-15 a win and lose 22. I have 60% win rates on the 2 main champions I play and I'm still demoting from gold 3 now to almost 0 LP gold 5. It's impossible for me to climb when I lose so much more than I gain. I don't know what to do or how to fix it because even with huge win streaks I still gain a max of 16 and lose 21-22.