There isn't an alternative if you exclude Linux/other FOSS OS. You don't get one when you use a proprietary, capitalist-controlled OS. You are inherently at the whims of whatever capital thinks will give investors a stiffy.

Use the massgrave options another poster listed: https://massgrave.dev/windows10_eol

That will allow you to switch your windows version to 10 iot ltsc and keep getting security updates for a while. If you switch to 21h2 iot ltsc you can stay on till 2032.

If you don’t wanna use linux but you want to get away from windows, Macs are cheaper and better than I’ve ever known them to be (relative to the value of a dollar). You’ll have to relearn some stuff but as someone who uses windows, macos and linux daily, it’s no harder than getting used to driving a car with the selector or shifter on the column as opposed to the floor.

Windows 10 has some sort of extended security thing for a bit (1 year you just need to sign into a microsoft account, 3 years you need to pay $30). Could also get LTSC but I'm no expert and I'm pretty sure that eventually even that won't work because other software will stop supporting Windows 10. More info here.