Jeans have always been one of the top toughest garments for humans to wear with visual success, in my opinion. Also, I've personally always found the fabric super uncomfortable. In the old days, they were thick, scratchy denim & now, everything has so much stretch, even if buying the proper size, I feel bound up like stuffed grape leaves.
I've typically had to try on a dozen or more pairs to find 1 that fits comfortably everywhere, looks flattering & doesn't do something it shouldn't... ride up, fall down, gap in the back when sitting, too tight in delicate places, long enough legs, proper waist fit so as not to cause muffin top, proper rise (too low can look too provocative, too high can look like an SNL character). There are so many variables.
I've seen less than a dozen people in my life, who I think look great in jeans... yep, my opinion. And, that speaks more to what I find attractive as far as hip/butt shape on wo/men. Many choose based on label & fad, rather than proper fit, style for their body type & comfy fit. I've seen many girls/women buy a smaller size than they need & the end result is too much squishing, binding, pushing in the wrong direction & flattening in unflattering places.
I've seen many men do the opposite... buy so that the waist is comfortable, not caring that huge swathes of material are baggy & hanging (usually the seat of the pants), making them look unstylish & out of shape.
I think jeans look great on kids & teens/early 20s, any style... wear what ya want, wear what your friends are wearing, that's what kids do.
I own 2 pairs of skinny jeans, cuz I got them for $3/each when traveling & needed something to wear... I wear them around the house only & will be cutting off the legs for shorts, cuz I just don't like a gripping fit around my ankles. They fit well, but I also feel too old to wear that style, so I wouldn't wear them out.
I'm old enough that I've been around for elephant bells in the 70s, skinny jeans with zippered ankles (1st time 'round in the 80s), acid washed/brightly colored/distressed in the 90s & even Jenkos & gaucho jeans, complete with bows just below the knees... I forget when the latter was around... 70s maybe?
I prefer to dress up, so jeans aren't something I wear often & although I think many don't look well styled in jeans for my personal style, I don't judge. Wear what you want, but if at a job, dress professionally, which means nicely tailored.
If skinny jeans are out, they'll come back when I'm an elderly woman, no doubt.
Also, through much trial & error, I find that men's small jeans or sometimes boys XL fit me best. I'm tall & thinner, so have smaller hips/butt & long legs, like a boy.