Hello @AkshayMee this usually happens, if a photo was rejected by the SPAM filter und you share the link with others. However in this case, you should still see your Photo under My Contributions → Photos.
Anyawy, looking at your profile, I can see out of you 13,075 photos an 1,508 videos, only 13,759 went puplic, thus 824 photos or videos are indeed hidden to the public. I recommend reading @MortenCopenhagen’s series of articles How to Get In and Out of Trouble: The Main post