Have you tried another power adapter and cable?
Raspi's can crash or even corrupt storage (SD card etc) if the power isnt sufficient.
See also below:
https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#power-supply-warnings
You could also check the systemd journals for errors/warnings etc for the current --boot:
sudo journalctl --full --no-hostname --catalog --priority warning --boot
Or two boots back (-2):
sudo journalctl --full --no-hostname --catalog --priority warning --boot -2
List all boots:
sudo journalctl --list-boots