I am not able to rank up


I don’t know any other place to put this but here. After 27 ish comp games (wins) i haven’t been able to rank up out of silver 2 even though I mostly top frag. After I hit my 70th win I get placed with silver 3’s and I get placed with a shitty team of unranks and silver 1’s. Does anyone have any advice on how to rank up?