If the transsexual operation is successful, physiologically speaking, both men and women can wear swimsuits with the same physiological structure after the operation.
However, before deciding whether to wear a swimsuit, you need to fully adjust and adapt to your psychological state, and make sure that you have fully accepted the new physical state and can treat and cope with it normally. Only by completely accepting this change psychologically can we enjoy life naturally, including showing our bodies in public.