Plus one for Kavita. Only slight bump is that it wants books to be in series because it’s quite manga focused.

Yes. Find something you enjoy that depends on knots. Perhaps a shibari friend.

+1 for Uptime Kuma, I use it with ntfy. If OP doesn’t want a self hosted solution, there’s UptimeRobot - essentially SAAS Uptime Kuma, but with a free tier.

Forgejo - actively developed open source. It’s what powers Codeberg. Easy to set up and manage with Docker. I moved to it from Gogs and skipped Gitea after reading about the forks.