Division Rainbow Six: Siege

I'm a regular gamer of R6, I've been playing since ALPHA on PS4. I've only just recently upgraded to PC and am struggling to find people to play with. I'm a very social person and like to plat both casual and competitively. On PS4 I got to Platinum 3 (almost 2) and am currently levelling up PC. I play almost every day and play on SEAU (Australian) servers. I'm looking for a platform to be able to look for a quad to have a good time.