This [1] is the OG guide to debugging suspend/hibernate issues. Arch Linux Forum [2] is also a good source for this. That said I've spent months debugging hibernate issues without success, it really is a crapshoot of driver support.

[1]: https://www.kernel.org/doc/html/latest/power/basic-pm-debugg...

[2]: https://wiki.archlinux.org/title/Power_management/Suspend_an...