I had similar requirements. I switched to Baikal, which has been happily running in a docker container ever since.

Im using borgmatic, a wrapper around Borg that has some extra functionality.

Very happy with it, does exactly as advertised.

My solution for a power efficient setup was to split it up: all the services I use but don’t need all the time, like jellyfin for example, I host on my nas. I only turn that on when I need it.

The stuff that’s running all the time, like home assistant, addblocker, etc, I run on a raspberry pi.

Might not work for everyone, but I’m happy with it.

I do exactly the same. I do not have a lot of data I feel a need to backup. I have a nightly job that zips and then encrypts my data, then rclones it to off site storage.

I have one 3B running adguard and a wireguard vpn server. Another 4B doing the same, plus kitchenowl and home assistant.