Answer:
fear of rejection, internalized homo/transphobia, and illegalization of homosexuality/transgenderism in certain countries are all good talking points
Explanation:
i'm sure that the third point is kind of obvious; if someone were to be openly lgbtq+ in a state were they aren't legally allowed to be proud, they could be imprisioned or killed.
though it may not be illegal worldwide, that doesn't mean that everyone who lives somewhere where it's legal to be lgbtq+ is accepting. people may be scared of getting rejected upon coming out. this could be losing friendships/romantic partners, getting kicked out by one's family, or becoming ostracized by society.
when one is in an environment that teaches them that it isn't okay to be lgbtq+, they are not going to feel happy with themself upon the realization that they may be gay/trans. they may have been taught at a young age that lgbtq+ people are gross or wrong in someway, making them refuse to accept that not only they are lgbtq+, but that is an okay thing to be.