Hello André Isidoro Fernandes Esteves, one more possibly useful thing to consider:
If you could install a core dump collector like package
systemd-coredump, then the system would store a file of
each crash for later inspections.
Also it would already print a backtrace in the system journal.
When then a crash happens these command might be used:
coredumpctl list
coredumpctl gdb <PID>
backtrace
Kind regards,
Bernhard
