I don't often recommend YouTube videos, and hardly ever reaction videos.
This one of Samantha Lux on a wonderful documentary about the ongoing deep friendship of an elderly trans woman, who came out late, and her cis male friend really brought me to tears (I am a sentimental cow).
Sam's comments are also gold for all people, who want to be supportive of trans persons and yet feel insecure about how to do so.
I will watch the documentary, for sure.