Eating makes me feel like a disgusting slob of shit pig but my BMI is 18, how do I fix my relationship with food

My worst source of dysphoria isn't even my big rib cage, my wide shoulders. It's my fucking long-ass bendy arms. Rib cages and shoulders can slim down a little with time, losing fat and losing muscle. Long-ass arms can't. Anyone who gets a side view of me will immediately fucking clock me, even though my arms are pretty fucking thin. Fuck my life.

racking up lines of amphetamines with cisf chasie

How do I stop constantly sexualising myself to people on the internet for validation? Ever since I tried it last year there hasnt been a day where I haven't sent some sort of nude to someone and I think this could bite me in the future