LP BUG?

So lets start i decided this year that i wanted to tryhard and get a good rank in league... so yeah i started grinding and it was all good there were no problems all were smooth But... When i got to Plat everything went to downhill i started LOSING CRAZY AMOUNTS OF LP... You wonder how much? Let me tell you -21 -20 --19 :) does that sound fun? WAIT YOU DONT KNOW THE BEST PART The maximum LP i get from a win is? guess ill wait :) 19 LP :) yey :D so fun :) im Plat 3 now... Everyday i tilt like there is no tomorrow i got sick of this game I BROKE MY FREAKING DESK JUST BECAUSE OF THIS THING FIX THIS OR FIND A SOLUTION RIOT FIX YOUR GAME