Can I recover photos even after deleting from recently deleted folder?

Short answer is a NO if you use iCloud for Photos. If you do not use iCloud for Photos, AND you have a computer backup of your iPhone before the photos were deleted, then you can restore your iPhone from that computer backup.

Axel F.

Only if you have some separate independent copies of them archived somewhere else, like a laptop or desktop hard drive. Otherwise, with iCloud photo, when you empty recently deleted, they are gone for good from iCloud.

After they have been removed from the Recently deleted folder, they are gone.