Lost all pools

Helo,
HOw can I restore all lose pools ?
I can start TrueNAS without any problem, but I dont see any pool.

Many thanks for any help very important.
we had ransomware attack and lot of files are encrypted.
I don't know what a coincidence it is - but in the same time (when we need restore our files) we loss all pools on our TrueNAS.
I see all disk in the Storage, but not any pool.

Regards
Jaroslav Jasek