Why not prepare camera card photo backups in advance? With a photo backup, in this case, you can easily avoid you deleted images. So, from now on, save all important camera photos on different cards or drives.
But, now, to rescue your images, stop using this camera card and try some data recovery software, like 4Card Recovery, Recuva and PhotoRec, etc.
After data recovery, also do not save the restored folders on this camera memory card in case of data recovery failure.
Never be so careless about your camera data again.
Backing up all important data well could be really useful to avoid similar data loss problems in the future.