I can’t imagine a life feeling that something was wrong with me and looking into a mirror then seeing a person that wasn’t me!
Being gay is a struggle, heck being straight isn’t easy but being what most don’t even understand has got to be the hardest thing ever. A simple thing like going to the restroom is an ordeal mentally and then having to cope with how people react no matter which room you use has to be not only embarrassing but exhausting.
Transgender male (which is not a term I see trans people using very often, many binary folks will prefer trans man), means someone who was assigned female at birth. No one “turns into” anything; a better way to think of it is that the person has been their gender all along, but at a certain point they come out and are able to realize it.
Transgender is an umbrella term that includes different types of gender variant people. Many trans men choose to undergo surgical or hormonal transition, or both, to alter their appearance in a way that aligns with their gender identity or alleviates gender dysphoria.
It really doesn’t matter how much you read there isn’t a way of knowing what these struggling people go through on a daily basis.
Being scared of what you don’t know or understand is normal but that isn’t a reason to hate or treat them any different that you would want your child treated.