Why do I catfish, hate myself, others and lack confidence?

I honestly petty myself, i have so much hatred for myself i wish if i could be a different person. Social media allowed me to be “others” but at the same time i developed self hatred i almost despise myself and others because i feel like others made me hate myself. Not only but i also have a horrible relationship with food I constantly fluctuate between starving myself and crying my eyes out as i eat the fridge to comfort myself. I just don’t know what to do or how to feel.
Why do I catfish, hate myself, others and lack confidence?
Post Opinion