After a core update, HA won't work. I starts and lose connection

Hi, After the last core update on my Raspberry pi 3b+, home assistant restarts. But whatever I try to do , Ha get => connection lost, reconnecting, after a while. If I go to restore backup, it is not working.
Any idea how to recover my system without reinstalling all my zigbee and automation.
I know how to restore a backup, but that is not working now. I don’t know any other solutions to restore the system on my raspberry pi.