your op.gg score is really high for 20 games. you have a 51% WR i dont see an issue. you seem like a good player and youre climbing. Youll have games with bad teamates not to mention youre in OCE lol. shit happens
you have a 65% wr on kass over 60 games as well last season and a 66% wr on kat in 30 games youll climb eventually
though i find i sus you went from S2 straight to P4 right after a half split but people get better and your pool stayed the same over those ranks so it doesnt seem too wack to climb that high