Being gay is a sin. It’s lust and lust is a sin. Stop doing gay apologetics. The problem is transgender IS a sin.

All individuals are created male or female, and must accept the biological sex they have been given by God.

It is okay for some men to feel more feminine and some women more masculine, however, this does not justify identifying as or wishing to become the opposite gender.

While desires to change one's gender are ultimately wrong, people who identify as transgender should always be treated with compassion and love and treated as equals in society.

https://en.wikipedia.org/wiki/Christianity_and_transgender_people#Catholicism