New macros disappear after the PC is turned off

I use a guest account, and for some time the macros I create disappear from one day to the next... the strange thing is that they resist a restart, but the next day they are no longer there :(
I don't know if this depends on the guest account, however it’s a problem that I have been experiencing for a few months. I also formatted the PC for other reasons, but the problem recurred even later.