Issues trying to figure out how to tune an orphaned platform - 2020 Subaru Legacy with FB25D engine and CVT

Hello everyone. I have been slowly working on my daily and making it more personalized. I know that the platform has been mostly orphaned due to having a 12:1 compression ratio N/A and a CVT transmission. It has been very difficult to find good quality information on what I can do regarding the platform. Would anyone be able to assist with identifying what I could do? For reference, I am a person not affiliated with any shops and only own this one vehicle.

Current mods: Nameless Performance intake (from airbox to throttle body), Nameless Performance midpipe, Valvetronic Designs universal muffler, and Enkei Draco wheels with Cross Climate 2 tires. There are a few other factory/cosmetic mods that are not relevant to tuning.