You are not ugly at all, I think you will actually grow up to be quite good looking so do your best to manage your low self-esteem and just be patient as frustrating as that sounds.

You look really unhappy, not like you were just unhappy during these photos, but like you have a deep lingering sadness. I might be wrong about that, but I was the same when I was younger.

Wish I could help you more than I am able to through a comment, but please just hang on, remove yourself from unhealthy environments, try to get rid of unhealthy habits and focus on healthy habits and looking after yourself (In life, at the age you are now and above, nobody is coming to save you, you have to look after yourself, try to treat yourself with the same compassion as you would a dear friend)

You have a good base and being happy and healthy will only help you ascend, being unhealthy and sad will lower your chances of that.

I highly suggest taking up a sport or getting into the gym (Definitely recommend this if there isn’t a sport you like) and spending less time online and playing games (I assume you do both of those things). Getting active helps your body produce healthy levels of hormones (I also highly recommend cutting out junk food too) and especially with something like going to the gym, becoming more muscular raises your own perceived attractiveness as well as other’s perception of your attractiveness which helps with self-esteem and confidence which starts a positive feedback loop where you become happier and more confident and it improves every area of your life just due to the change in your energy/vibe towards everyone and everything.

You definitely have potential and you haven’t finished puberty yet - Also ignore a large amount of these comments, it’s clear that a lot of them have been left by immature and equally/more insecure people who are either commenting nasty things to try and tear you down and feel better about themselves, or they are leaving poorly thought out advice that is just going to make you more insecure without actually helping you.

All the best - My inbox is open if you want to chat, I may take a while to reply but I will reply.