-d is required if you’re on an lts until .1. If you’re on mantic you should be able to upgrade without it

Fwiw you don’t need to cancel or trial anything. Everyone can get free Ubuntu pro licensesbfor up to 5 machines

In another country where this wasn’t relevant perhaps?

That’s fair. I can’t say it feels more bloated to me, but the tablet/mobile issue is definitely a big one if relevant for your players.

Not really the topic, but why do you want to run owlbear alongside foundry? It seems like a slimmer alternative rather than something to use in conjunction.

To actually answer the title post I just run foundryvtt and I have a bunch of RPG manuals backed up in Nextcloud so I guess that too