Someone/people keep unliking my Facebook pictures?

[Akuch]

Okay so every time if someone commented on one of my pictures and I comment back to say thank you, I would always lose one like. Or if I change my profile picture to an old one, I would also lose likes. Last night I had 120 likes on my profile picture and I checked this morning and it's down to 117?? Like is this a Facebook glitch or is someone actually unliking my pictures and why? And is there a way I can find out who keeps unliking so I can unfriend? Please help cos this is really bothering me, thank you xoxo.

[Bob]

No there's no way to find that cause it shouldn't matter, it might just be that its guessing t the number of likes so its changing.

[Shriram]

Its a account mistake

If someone from fake account like your photo...

If after some days facebook identifes as fake and delete them from facebook.... Then your like will be removed automatically

This is a reason