When someone is just told they are trans, that opens ground for denial; it activates defense mechanisms built by internalized transphobia, and it has a high probability of pushing them further into the closet, if not making them outright transphobic. Even when it doesn’t, it leaves ground for their own subconscious to reject their dysphoria, claiming that they were just manipulated or deceived. The much more effective strategy is to talk about your own experiences with dysphoria so that they see the common grounds and come to their own conclusion about their gender.

https://genderdysphoria.fyi/en/am-i-trans

looks a community name

Not everybody is aware where exactly they are