UPS recommendations for N100 + Terramaster on Unraid(France)

New to the whole self hosting for a few months now, and got my first electric shutdown this week.

Well realised that it could all come crashing down in case of a bad restart or corrupted data so thinking of adding a UPS to protect the install

My issue, I don't know anything about it...

So if anyone got good recommendations I'm all ears !

Thanks