Signal needs automatic cloud backups so badly. They’re encrypted anyways, why not allow it as an option?
I’ve used it for years now and it’s great and I managed to get all my friends to install it. But manual backups are basically impossible for the average user. Also it’d be nice if we could bulk export pictures more easily.
I have Nextcloud running on a Pi4 and it runs like a charm. It has a lot of RAM and processing power to spare, actually. The good thing about arm mini computers is the exceptionally low power draw. You can’t achieve that with some old x86 PC.