Download the .deb from their downloads page and run it, just like you would either a .exe on Windows. Their instructions list that as an option further down on the page. Should be higher up imo

Seconded. Love OMV

Open Media Vault (OMV)! I was given a used QNAP NAS, but didn’t want to use their OS. TrueNAS has higher system requirements than what I had and Unraid is paid. OMV has been a dream! Having the flexibility of a full Debian OS, but also with the prepackaged software I need, it amazing. Plus, I love the web UI. At the time of writing this, I have 12TB of usable space with 3 months of uninterrupted uptime.

They can still track you by other data such as IP, user agent, and system info. I don’t know that they’re doing this for sure, but I have a hunch that they are. It’s google lol