the things you like about Reddit didn't exist when Reddit was the new alternative to the enshittification of Digg. KBin is brand new and Lemmy was not much more than a tankie hub until recently.
KBin and Lemmy will build the communities you're looking for over time. The question is: do you want those communities to develop under the shadow of the same algorithms, bots, and content you see on corporate social media, or do you want something new?