To not see some photos in the Recent folder, you might hide them.
These photos will be moved to a separate folder, Hidden.
Your iPhone will need a Face ID or Touch ID to access them.
Vlada Komar
you’re able to return them to the Recent folder and share, edit, or delete them.
To hide a photo, you oughta tap the three dots and select Hide.
How to hide photos on your iPhone?
How to find the hidden album on your iPhone?
The Hidden folder is located in the Utilities section of the Photos app.
you might unhide, share, or perform all the same actions as with other Recent photos.