Buddy, you have a genuine problem in that you're refusing security updates. Never mind the importance of your data, a system that's not receiving patches can become part of a bot net using your bandwidth to perform DDoS attacks, it can be used as a springboard to infect other systems, and it can be used to spy on you (if not directly via hardware sensors, MAC spoofing based MITM is a thing), it can lead to hardware level compromises (by infecting the BIOS), it can be used as a proxy for illegal activity, and probably some other stuff I'm not thinking of right now.

If you want to update to Windows 11, I fully accept that as a valid choice.

This is not a Linux vs Windows issue. This is "I don't like what Windows has become in 11 ... and I will not be getting security updates on Windows 10 soon." So, your valid options to be responsible are A) get over it and update to 10, Microsoft owns Windows, you do what they do if you want to run Windows, B) install Linux, C) buy a Mac and host it on that, D) install FreeBSD and host it on that, E) write your own operating system, F) find some other niche operating system.

So when I suggest "just install Linux and fix your problem" it's not fan-boy-ism; it's accepting the reality that what you're doing is a bad idea and you shouldn't do it.