There's two video types that cannot be deleted, and those are the ones submitted under these licenses:
1) Exclusive Video Management license,
2) Video Management (excluding YouTube)
The following videos can be deleted from the "all videos" tab here:
3) Rumble Player license.
4) Not For Sale
As per the agreement you selected at the time of upload, your videos can either be or not be deleted in your end. If they can't be deleted on your end, they can't be deleted period.
You cannot request that Exclusively licensed videos be deleted at any time.