Why do I look so pudgy in photos people take of me?

I’ll start by saying I’ve always struggled with being insecure about my appearance. I don’t think I qualify as “conventionally attractive” due to a facial features I have (22F white btw). Sometimes I feel pretty but that mostly happens when I’m looking in the mirror. I’m 5’8 and 140 lbs. I’ve been a string bean my whole life so I’m “skinny” but in photos I don’t look as much like it. My thighs are thicker and I have a more straight than curvy body type. I’m not as insecure about my body though. My face is the issue. I think I have a rounder face? My face often looks really pudgy in photos others take of me and you can see a line of a double chin lots of times. I would say I have a bit of a weaker jaw maybe, which is definitely one feature I’m insecure about. I have long straight fine hair right now. My nose is the other feature I’m insecure about. I don’t mind the shape necessarily, it’s alright though I feel like it’s a little big. The bridge of my nose in photos looks bulbous for some reason though . I wear glasses for more context and I think the way they look again my nose maybe isn’t flattering?

I know I’m not used to seeing myself at these angles and that the camera doesn’t capture the “true” me or whatever but I look at the other people in the photos and they look normal to me unless it’s an unflattering picture in particular. I wish I was the me in the mirror or the girl I see in my head or even me in the selfie mode of my phone. I look like a different person sometimes in the photos I see taken of myself.