Suspent to disk?

Hello all,
Some years age it was possible to use the “suspend to disk” on Linux laptops where “suspend to REM” dind’t worked well.

Is something similar possible on the MNT Reform 2? I am not a Linux expert (just a long-term user) and I have no idea where to search.

Or it is not possible on a systemd-based OS?

Also known as hibernation. In theory it should be possible on the Reform or the Purism Librem 5. I however, have not been able to get it working. I would love to see if anyone else a bit more familiar with these things would give it a wack.