@apontious I'd recommend looking for online #TTRPG gaming communities that regularly play indie games.

Off the top of my head...

Open Hearth Gaming Community #OpenHearthGaming
https://openhearthgaming.com/

Games On Demand: #GamesOnDemand
https://discord.gg/f8wTkSRU

Happy Jacks RPG Network: #HappyJacksRPG
https://www.happyjacks.org/

Magpie Games: #MagpieGames
https://magpiegames.com/

There are a LOT of people playing non-D&D RPGs, but they mostly don't hang out in D&D circles.

Wishing you good luck!