Stuck in challenger 2

Please help, I’m like 30 trophies away from challenger three but I just seem to CANT get there!

JUST WIN A BATTEL 

ITS ANNOYING BC I ALWAYS GET 28 TROPHIES AND THEN LOSE TO A PERSON WITH ALL LVL 12

Lol I just got there.

shut up @iamtheonetoone

use my deck

https://royaleapi.com/player/999CR9YVC check it out its OP

i left my clan and now i dont have 1, i was in a gold BTW

i am on challenger III

once I got to master 1 but I immediatly went down because at that time i faced lvl 13 and i was at lvl 10 but now i am at lvl 11.