Help needed!!

Okay, so i own a PS5 and have slowly been getting into the Dark Pictures games. I love them full heartedly. Im a physcial copy collector, so i was hoping Man of Madan and Little Hope might have a physical release for ps5, but unfortunatley, they dont. Ive heard that some ps4 discs are still compatible with the ps5 and was wondering if this is true for Man of Madan and Little Hope? If it wotks, i would gladdly buy the ps4 discs, but if it doesnt i will be disapointed and result to just getting the digital releases.