If you’re serious about wanting to do that, you should start with the framing an acephobe would have: you aren’t aroace. You experience anxiety about sex because of shame. Seeing it that way gives you something to debug.
An important thing to recognize is that if you didn’t already identify as aroace, this would also be a therapist’s assumption if you told them how you feel about sex. So, get a therapist and tell them you want to understand why you have trouble relating to others and/or your body.
If you’re serious about wanting to do that, you should start with the framing an acephobe would have: you aren’t aroace. You experience anxiety about sex because of shame. Seeing it that way gives you something to debug.
An important thing to recognize is that if you didn’t already identify as aroace, this would also be a therapist’s assumption if you told them how you feel about sex. So, get a therapist and tell them you want to understand why you have trouble relating to others and/or your body.