I was thinking more solo board games – I have roughly no TTRPG experience, though I’d be willing to try. (I last played D&D probably 20 years ago in high school. It was one of those things that I felt I was supposed to be into, but, when push came to shove, it wasn’t my jam. Now, that was also true of computer games and I like some now.)
Adding on to this, you can find stats about high rates of “desistence” among children and youth with GID© diagnoses (I’m not sure what that become in DSM-V when GID became “Gender Dysphoria”). However, these stats need to be understood in the context of what the criteria for GID© are–they’re incredibly broad. Any mildly gender-non-conforming child can fit the criteria if their parents dislike their gender non-conformity (there’s a quasi-conspiracy theory that it was a backdoor to “treating” “pre-homosexual” kids after the removal of homosexuality from the DSM). It’s no shock that most of these kids don’t grow up to be trans–they mostly weren’t making a statement about their gender identity in the first place!