Is your LN node still accessible through RTL or Thunderhub or Umbrel dashboard?
Try to close normally the channels and wait to recover funds in onchain (you will see them in Zap onchain). Normally takes 144 blocks (24h). Keep that Zap wallet as it is as a backup wallet.
Then start a new node instance, clean, from zero.
Send the funds from Zap to your new node and start fresh.