Locked Folder Photos Deleted?

Hi! I recently switched to an iPhone after spending my whole life with an android and i was wondering if that could’ve somehow caused my locked folder pictures to be deleted. I’m pretty sure I have had Google Photos back up all of my photos for as long as I’ve used it but recently I went on the app again to look for a photo I put in my locked folder but when I opened the folder there were no photos inside of it. Then I tried looking for some of the photos I had put inside the folder just in my gallery to see if they were simply removed from the folder but I couldn’t find any of them. Has this happened to anyone else and is there any way I can recover these photos?