If recovery tools find nothing, the key question is whether the card was quick-formatted or fully erased. A quick format often leaves the actual photo/video data on the card, so recovery may still be possible. A full format or erase writes over the old data—often with zeroes—making recovery very unlikely.

A good next step is to inspect the card at a low level with a sector/hex editor or clone the card first and examine the clone. If the sectors are all zeroed or blank, the data is effectively gone. If you can still see old data patterns or fragments, stronger recovery software may still be able to reconstruct contiguous files like JPEGs and videos even if the original directory structure is gone.

Because you have not overwritten the card, stop using it and avoid any further write operations. If software still finds nothing but the data is important, a professional data-recovery lab is the remaining option.

In short: if the card was fully erased, recovery is unlikely; if it was only quick-formatted, recovery may still be possible with more capable tools or professional help.