I run a language learning app* on a single VPS, for free. I'm not sure if you can still get it, but Oracle used to offer very generous VPS for free. I have a 4 CPUs, 24 GB memory VPS that I'm using for several things, including running the backend and the marketing site for that app.

I installed Plex but ended up not using it, so I removed it.

* https://www.langturbo.com