So someone I played with double ranked up from gold 1 to gold 3, stats were nothing special 15kills 15deaths. Does anyone know what could make this into a double rank up?

I am a killjoy main and people always tell me I'm boosted or they look at my career history and say "why are you always bottom fragging"? Ffs I play my role like it's intended to be. In attack I play behind dualists, get their trades, use...