If you don't have a partner, gaslight yourself about it being caused by your repulsive physiognomy and physique. Delete the words acceptance, contentment, and body positivity in your dictionary.
Go to the gym more. Be the man your God wanted you to be. I'm not talking about your religion's sky daddy. I mean greek gods and roman gods. Be a living breathing version of your physically fit greek and roman gods.
Obviously kidding on some parts, but point being is eating less wont get you there.. get rid of the lowest hanging fruits of temptation and spend real time building muscles!