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I guess your options are:
Do hacky workarounds to install Win11. If you make an install disc with Rufus there’s a checkbox to do this automatically. There’s no guarantee MS won’t bork your install at some point due to this, but so far it’s worked well for people.
Install Linux.
Stay on Win10 and lose software support from MS and your installed programs. This is risky, and the longer you do it the more risky it’ll get.
Send your PC to the landfill and buy a new one.