Droplet stopped working

I had a personal blog published with ghost. I don’t write that often and i don’t have any monitoring, so i have no idea when it stopped working…
But it stopped working at some point. It is a self hosted instance on digital ocean with a Droplet.

The problem seems to be mysql stopped working, but i can’t find a way to restart it. Does anyone have any hints?

sudo journalctl -xeu mysql.service
░░ Subject: Unit process exited
░░ Defined-By: systemd
░░ Support: http://www.ubuntu.com/support
░░ 
░░ An ExecStart= process belonging to unit mysql.service has exited.
░░ 
░░ The process' exit code is 'exited' and its exit status is 1.
Apr 05 06:37:03 ghostonubuntu2204-s-1vcpu-1gb-intel-fra1-01 systemd[1]: mysql.service: Failed with result 'exit-code'.
░░ Subject: Unit failed
░░ Defined-By: systemd
░░ Support: http://www.ubuntu.com/support
░░ 
░░ The unit mysql.service has entered the 'failed' state with result 'exit-code'.
Apr 05 06:37:03 ghostonubuntu2204-s-1vcpu-1gb-intel-fra1-01 systemd[1]: Failed to start MySQL Community Server.
░░ Subject: A start job for unit mysql.service has failed
░░ Defined-By: systemd
░░ Support: http://www.ubuntu.com/support
░░ 
░░ A start job for unit mysql.service has finished with a failure.
░░ 
░░ The job identifier is 2609 and the job result is failed.

Got deeper into the problem. It seems the mysql update is not going through:
Server upgrade started with version 80036, but server upgrade of version 80033 is still pending.
I wonder: is there a way to back up my ghost data? I could spin up a different Droplet and put my data there, but i’d need to take a backup first…