Lightroom Classic paid support.

I have never heard of such a service. If this is about your previous thread, I am sorry to say that it sure sounds like the user accidentally deleted files, as neither LrC nor your operating system deletes files on its own; LrC and your operating system only delete files when you instruct it to do so. Everyone has clicked the mouse in the wrong spot and did something bad and didn’t even realize it.

I think your best chance is to find data recovery experts, rather than LrC paid support (if it exists). However, most data recovery services are very expensive.