Haiku. It’s a reimplementation of BeOS.

Alternatively, you could use ReactOS and make it look as windows-like as possible, and then go and post on Windows support forums with solutions to problems that work for ReactOS but not for actual Windows, and then play dumb while calling them dumb when it doesn’t work for them.

I use arch btw.

Also consider a healthcare career. As a teenager, I wanted to do computer science/engineering, and sometimes I do wish I had stayed on that track. But now, as a nurse, I could get a job in any state in the US by tomorrow. I dare you to try to find a hospital that doesn’t have open nursing positions. Even when the economy goes down, people still get sick. Even if society collapses, the knowledge/skills will be useful.

And if you don’t want to change diapers or deal with blood, there are still options; I’m in psychiatry and rarely have to deal with either.