Windows tends to 'clog-up' the system after some time even when regularly
running 'clean-up apps' because of accumulating 'cruft' with the result
that the machine gradually runs slower.

Linux does not have that problem ;it just keep running at the same speed .
Also it is very easy to remove/purge software no longer required to run the
system,as it is to install new software.

Linux runs well on up to 10 yrs old hardware.

Suggest you make the switch ,provided you are inquisitive and prepared to
learn.