Linux used to be alien to windows users butt now Linux Mint and others are very much good for long time windows users like me.
I tried it on my laptop and it seems fine.
Yes there are some windows programs that do not run on it but it can emulate windows for most.
It is however far far less of a resource hog like Windows is, it's much much faster on older machines
It does not require the security chip MS has decided we must have.
After making backups of essential stuff IMO it's worth trying out on the old PC just to see if you like it, if you don't then get the new PC that's needed for W11 so there is nothing to lose.