How to view more logs on TrueNAS crash?

Hi,

I made a post already about my server that keeps crashing on a daily basis. You can read that here: Daily server crashes (systemd-journald.service)

Since I still haven’t been able to resolve these crashes, I want to know how I do I see more of the logs that appear on my screen when the system crashes. I cannot scroll up with my keyboard. Is this output written to a file somewhere, that I can look into after rebooting the system?

Kind regards

Geert