Check here in case its backed up on a microsoft account.
https://account.microsoft.com/devices/recoverykey
Most likely this one caused it.
https://support.microsoft.com/en-gb/topic/kb5012170-security-update-for-secure-boot-dbx-august-9-2022-72ff5eed-25b4-47c7-be28-c42bd211bb15
If you don't have the recovery key then you'll need to factory reset it or otherwise clean install it.
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