Why do men have transgender surgery?

When a guy turns to a girl, it's called transgender or transsexual. When one transitions, they have known that they were whatever gender they transition to in their mind. One then wants others to see them how they see themselves so they will come out as transgender. Some will like the opposite gender after they transition, or they will like the same gender. Males that change to females often take oestrogen inducers to raise their voices. Some will also get chest implants along with a genitalia surgery. It's also polite to call one by their wanted pronouns, (he/him/his) (her/she/hers) or neutral (them/they/their).