Weight loss for teen

this is super embarrassing but throughout my whole life I’ve let people get the better of me, wether it’s family or friends or strangers or people online or anything. I’ve been called ugly and stupid and fat my WHOLE life so I’ve turned to food as a comfort and I’ve been overeating ever since. It’s so embarrassing and I hope the people seeing this post can empathize and realize how hard it is to loose weight especially when your parents do your grocery shopping and they are not on board with you loosing weight, no matter the effect on your health. Over the years I’ve continuously gained weight and I’m currently 16 and 297pounds.. It’s hard to type that number when I know people my age complain about being 150pounds, never mind almost 300... I’m saddened by how I let myself get to this point but I need to make a change. I’m 16, and I’ve lived my whole life feeling left out and not being able to do the same things or wear the same clothes as everyone else. I’ve been missing out on so many things that might not seem so significant but I want to have a normal life where I’m not hiding behind layers of fat. I have a hard time getting motivation. I need some tips and tricks any of you might have.. anyone who’s ever had a “weight loss story” or anything, or has been through something similar, I’m turning to you. PLEASE HELP ME. I’m just tired of feeling sorry for myself.

I’m hoping you won’t judge me too hard, even though this post is anonymous, it took a lot of courage to post.. thank you for the support.. if I get any lol.. :/