I used daily affirmations to reprogram my brain and love myself limitlessly.
after I transitioned I struggled with these same feelings. A friend sent me this meme:

I loved this and I took it to my therapist and I said ‘I want this but obviously I can’t use this’ and my therapist asked me why I couldn’t use it. She taught me how to do verbal affirmations, out loud so your auditory system processes them directly into your brain. I spent months telling myself out loud every night how kind and loving to myself I was. That I loved myself limitlessly. That I took such good care of myself because I loved myself so much. That I was beautiful exactly how I am.
It was faking it at first but over time it worked because you never met a girl who loves herself as much as I do. I was able to wipe away decades of toxic self and external programming with a few months of this practice.
I believe that we have to be our own champions in this world. Beauty is very subjective individually but if you can see yourself as beautiful that’s all that truly matters because it affects how you hold yourself and present to the world and people can’t help but respect that in a way. I know there are lots of women who may be objectively prettier than I am but it doesn’t matter I’m gorgeous and I love myself limitlessly and I spend my time with people who treat me with respect, compassion and love.
There are many paths but this one worked for me. Therapy is really important. Good luck sister!