I’ve used Devuan before with decent success, I run it as a server on an ancient netbook with 1Ghz and 2GB RAM. Works pretty well, but bear in mind so much has become entangled with the expectations of systemd that as more packages get installed you may find things that break. As an example, apt gets an error every time it does anything because Mullvad VPN software has a configuration step that expects systemd functionality, and obviously that won’t work on Devuan. The program itself works fine, just have to start it a little differently, but it means that apt functionality always returns an error, which itself breaks any other scripts you may run that have steps that use apt. I had to do a lot of manual patching for PiHole scripting to get that installed because every time it would run anything with apt it thought there was a showstopping error simply because Mullvad complained during apt configurations.