I've tried, but it was not easy at all and I sadly finally gave up because it uses Redis and that Redis needs some specific instructions that are not available for old/low end CPUs like the one I have in my homelab. The best self-hosted alternative I found at the time was FidusWriter. Probably not the best solution for OP, but still an OK self-hosted alternative to Overleaf.

Hi, I've recently read here on Lemmy an article stating that an extension of the ActivityPub protocol to support facebook marketplace's like transaction is being considered, but I don't have any more detail

I personally use it with Neo Launcher, which is FOSS, set it up to show round icons for this very reason you're pointing out. Once done, the experience is great!