Should I keep going to brazilian jiu jutsui class ?

I feel like I want to quit it , I get my assed kicked in grappling almost EVERY SINGLE TIME ! 1 of my friends who started to do bjj 1 month before me is like way better then me in grappiling and I always use the same moves that I learned and also If I dont get my assed kicked then the fight turns out to be pretty even and the only time I won a grappling much was against this girl whoes only 4 years younger then me and I didnt have to use that many moves from the bjj aresnal in that grappiling match , and the other times I actually win a grappling match is when My sensai goes easy on me but I feel kinda dumb because I use the same moves all the time . So Im wondering how can I feel more confident in a grappling match and not feel embarresed ?