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I would immediately install linux on it. But that's what I do with every computer I have.
If ubuntu is the only thing you've tried in the past. I would say keep it fairly "simple" for yourself. Pick something like cachyos where you don't actually need to know anything, and everything is set up for you. Arch, and some of the other minimal distros are great. With the caveat, that you already know what to do, and everything you need. Installing the distro is the easy part there. Actually configuring everything is where I could see new people getting frustrated and giving up.