You're welcome!
Trixie won't be much different though it's better to use something as lightweight as possible because of the HDD. However you can still use something with Wayland unless its CPU or GPU is too old. antiX is Debian based but it uses X11, at least it was like that last time I used. It's really great if the PC is too old.
I think you can even install KDE with Debian Trixie. If Wayland would be problematic (probably won't) you can still use X11 with it. At least until its next big release which they will drop X11 support entirely.