I think you can get Open Street Maps in the F Droid app store. But, as much as I appreciate OSM, it’s just not the same as Google maps. The speed, accuracy and information doesn’t seem to have an equal.

You definitely can run Nextcloud in a VM. With decent hardware, it will do it. I guess I would say it depends on needs and expectations. My install is not snappy to me. I’ve got what I feel is a very beefy server but still. Just feels a little slow at times. Totally functional. Just has a small amount of lag when doing anything. I’ve read people say they have none at all. But when you’re busy and relying on it, my suggestion is to eke out everything you can for it for a better experience. Not make or break by any means.

I don’t think it’s a problem per se, as much as it’s a difference in priorities. But the docker implementation in TrueNAS is more of an afterthought. I think they’ve fixed some issues but checking out their forums, many of the issues I faced seem to still exist. Docker packages corrupting and not being accessible in any way, not updating, just seemingly, not robust. Also, I disliked the file permission structure but that’s more preference I think. I would say TrueNAS is a great NAS just not the best hypervisor and NAS.

A few things. I also think nextcloud is the way to go for what you want. I’ve gotten rid of anything Google I can. Except for maps. Man, there just is no substitute especially when mobile.

I always do, but I’m going to suggest Unraid for a NAS. Pay the money and then just enjoy it. I fought with truenas for over a year before I succumbed. You can totally play around with zfs, striped arrays whatever. I do not recommend an external enclosure. I think you’ll come to hate it for lack of ability. I recommend biting the bullet and building a machine or putting your current PC components into a real case with upgradability if possible.

Also, I wouldn’t plan on running Nextcloud in a VM. Nextcloud is pretty beefy and a VM adds complexity that I suggest against. A docker AIO version of nextcloud running on as close to bare metal as you can is probably the best option for performance.