Look for independent forums based around your interests. A couple examples of places I hang around being CheapAssGamer for game trading and GBAtemp for game stuff. The latter is mostly console modding and homebrew. There's a handful of others for other non-gaming interests. I would never endorse any of these sites as being perfect politically, but it's not often a key part of the discussions and is far off from Reddit-level.

Extra bonus, they are all separate sites so if you're talking about how to mod your Gameboy you're not going to get some clown digging your history and derailing your post into how you posted on an entirely different forum how you think trannies are mentally ill.