Mixdown Not Loud Enough

exporting the mixdown wav and reimporting it to a new project helped a lot. probably 20% louder. the brickwall kinda squishes everything down, haven’t figured out what’s best yet, but it seems to involve individual track adjustments of the compressor and limiter. come on, is there really a mastering app? what’s closest thing to waves or ozone that interapps with cubasis?