There are lots of great videos on YouTube and other platforms about gender for young people. Here are some of the best ones.
https://www.youtube.com/watch?v=nAOFGSHGJlc
https://www.youtube.com/watch?v=nAOFGSHGJlc
Trans Youth (transyouthdoc.com)
- 2017 documentary follows several trans people living in Austin, Texas
Archival material
Amaze jr (amaze.org/jr) https://www.youtube.com/watch?v=f7VyJKVBt7g [deleted]