How do you stop people from liking/commenting on your Facebook profile picture?

Sorry for the kiddy edits, they're just to keep everything private.

I'm trying to make my Facebook profile more professional if anyone ever looks me up before hiring and if I have a profile photo I want it because I want it, not because it's going to get likes/attention or whatever because it just kills my self esteem when I compare them so I never change it.

This girl I've met once before has a profile picture where you can't like or comment, you can just see it (the two sun pictures) as opposed to the normal one where you can like/comment (the owl picture). I found it out cause I was Facebook stalking her 😂 cause she posts a lot of really good feminist articles but I can't exactly ask her "hey, I was on your profile even though we just went to that one concert forever ago and never spoke again and your profile picture hasn't got a like/comment option which is cool. How did you do it?" without admitting to being a creep hahaha

Anyone know how to do it? :)