Best way to get from 2100 elo to top 500 (2150) in gen 9 randbats?

Can't seem to win more than 1 game ever at a time. Ive played 12 games rn and grinded my elo to a halting 2110 and can't progress much. Is there any tips any high ranking gen 9 randbats players can give me to beat those pesky 2150-2200 elo players? Thanks.

Btw I know most of the usual tricks like saving your teras and scouting, playing safe in the beginning, etc. Looking for kinda specific advice. Also i play on mobile so showdex isn't accessible.