I've been playing D&D 5e for about 2 years now, but I'm interested in Pathfinder and Starfinder as well. I tried out Warhammer, but it just wasn't my thing.
I'm currently GMing my first campaign (Out of the Abyss) and it seems to be going ok. I've learned a lot about macros on roll20.
If you are needing another player, hit me up. After I finish Out of the Abyss, I might be open to GMing another game for strangers...might.