@sympatheticDrum2828 I feel you. It has become very difficult not to compare ourselves to others when everybody is in eachother's face all the time through social media. I found it helpful for me to get off most social media as it was distressing both to see everyone being active but also because it encourages certain artificiality in portraying reality.
Weight has nothing to do with who you are...but i get your point.
Although at moment i'm very low o n self esteem myself what had started to help me before I relapsed into depression was a path of self-compassion - I had started with loving kindness meditation (you can find many online) but if you find a therapist specialising in self compassion and you feel it is the right person to guide you I would suggest you try. I took a break as had to start focusing on trauma therapy but I feel we really all should have been taught the basics of self-kindness from our youngest age as low self esteem is such a burden and so widespread it feels like a pandemic...
We need to learn and re=learn how to be kind to ourselves and I wish you to find a healing path so you can proceed to appreciate yourself for who you are