I understand- I’ve had someone in my life once give me the same type of criticism. Know that it’s not your fault you are being treated this way. The only way to win IS to love yourself. Look up exercises online for finding self-compassion (Such as by Kristin Neff) or radical self love advice. You need to let the weight thing go or it will ruin your life. You are already beautiful. We are fed a lie by society that we must look a certain way to be attractive. It’s not true at all. It’s just what we have known all our lives and believed. Don’t lose yourself in that.
If you want diet and exercise tips, here are mine- I’m a mix of vegan and keto. If you don’t want to go vegan, look into keto at least. I am fuller faster and longer because of it. I also recommend steel cut oats for breakfast. Not rolled oats. STEEL CUT. They are a little harder to prepare but worth it. I lost a lot of weight doing this and it kept me full almost all day. I do this or a mix of any keto friendly cereal (catalina crunch is another example). I eat an avocado a day for the keto, plant protein drink, roasted or stir fried vegges (From a food kit) and an apple and banana a day. As long as you are HEALTHY, a diet plan is okay to have. It’s fun to find recipes too. 🙂
For workout, I’ve tried EVERYTHING. And I’ve found a)I love nature b) jogging is doable. So I’m not super in shape but I mix a run and fast walking when I’m outside in the cool evening. (or whenever you want). It’s taken a few months to get it a part of my routine but I enjoy it. The runner’s high is a real thing too!
I hope that all helps you regain control. Remember- you are beautiful.
Edit: For the isolation thing, try some facebook support groups!
Though I run this site, it is not mine. It's ours. It's not about me. It's about us. Your stories and your wisdom are just as meaningful as mine. 