Been on Reddit for 15 years. Will probably hang on to a few communities that only exist there for a while longer.
I was sad and sentimental about it when it started dying years ago. The desperate "must grow until implode" path that all corporate owned platforms follow, is inevitable. At some point it'll suck too much for you to tolerate.
Make a first-party mobile app for a site that would be fine on web. Sell premium subscriptions. Sell microtransactions. Insert ads. Insert more ads. Insert ads inbetween content. Make the ads look like content. Put usability features behind Premium subscription and forbid integrations that do similar things. Try to be tiktok? Try to be a social network. Short videos! Try to be Youtube? Try to be Twitch!