I was actually kinda thinking about this yesterday, because I also feel really ugly even though most people tell me I look fine. Just saying 'oh you look fine!' doesn't really mean much, because people will say that either way in my experience (and no hate to them, they're just being polite).
That's not to say you are ugly, beauty is subjective and different for everyone. I personally think you look great, you like kind and healthy.
I think the thing that has helped me most was trying to shift my focus on what I can't do to what I can. I can't fix some of the facial features I'm insecure about, but I can grow out my hair so I like it more. I can't change how tall I am, but I can work for a healthier body that I feel more comfortable in. I can't get rid of my eczema, but I can wear clothes that fit me and that I like. Obviously, that's easier said then done, and I suck at it, but it does help.
And of course I could go on a rant about how beauty isn't everything, but I'm sure you've heard it somewhere before. Just remember that you're worth as a human has nothing to do with what you look like--that and being a kind, friendly person can often override how you look.
Also this might just be me, so take it with a grain of salt, but I don't really look at peoples faces that much? I have a hard time doing eye contact about half of the time (suspected autism yayyy) so peoples faces are mostly just a blend of their strongest features and usual expression in my memory. I don't really look closely enough to notice flaws, certainly not as close as I look at my own face in the mirror.
I know you mentioned the acne, so I'll be honest and say that most of the time I don't notice it on people. Maybe it's because I'm a teenager, so I just see it a lot, but I don't really register it as something separate from someones skin. They're just like freckles, y'know? They just sort of blend in to people. We always overestimate how much people are looking at us, and judging how we look. Most of the time, people are focusing on the way your face is moving so they can read your expression and body language, then focusing on what your face actually looks like. Maybe that's just me?
At the very least, if someone does focus on your appearance more then your actions, then they're a weirdo who doesn't deserve your time.
That's it for my half awake ramblings I hope you have a great day *hugs*
Me Cellist, dreading our summer jobs
Honestly, the state of the future sucks and I don't know what to say that will help you feel more hope. I guess, I'm trying not to dread this summer by focusing in the stuff I will get to do in my free time. I have a ton of hobbies I want to work on, and having a job to fund them is gonna be great, even if the actual job sucks.
The world is really awful right now, but the sun still shines in the morning and that's pretty cool. I like making little things with my hands to hang around my room because they help cheer me up.
Also this is gonna sound weird, but I know vague advice is less then helpful, so here's a stupid tip: watching shows meant for kids in your free time is awesome. It gives your brain a nice break from the complicated dark stuff, and it takes you back to a time when you were less stressed. I've been watching a minecraft smp (an unproblematic one don't worry) and it really helps me. Do with that what you will, I don't pretend to know what I'm doing lol
*hugs*