These are the most entertaining and accurate documentaries I could find links too (some links are not that great quality but were the best I could find, I know some are available on amazon prime as well!) In my opinions these are my faves and are the best ones about the band. There are really great just Freddie ones as well but everyone wanted me to post the best Queen ones, so here ya go! If you know any more feel free to contact me and I can add it to the list!
Days of our Lives from 2011. Features Brian and Roger.
Part 1: https://www.youtube.com/watch?v=ZJBRe7dQK4o
Part 2: https://www.youtube.com/watch?v=8REFycB6EZ8
Magic years (1,2,3) from 1987
Volume 1: https://www.youtube.com/watch?v=ISv4rRuBeas&index=1&list=PLQTf_MUhdpTWQjF7DCXjhIhArozEExyx_
Volume 2: https://www.youtube.com/watch?v=zbLVikLTb64
Volume 3: https://www.youtube.com/watch?v=L95GrFkMDkk&index=3&list=PLQTf_MUhdpTWQjF7DCXjhIhArozEExyx_
Champions of the World (The Queen Phenomenon (TV) from 1995
https://www.youtube.com/watch?v=5BT_7mGvrqg
Queen: From Rags to Rhapsody
https://www.dailymotion.com/video/x3ipoxp
Rock the World is great! From 1977. It focuses primarily on the release of News of the World.
https://www.youtube.com/watch?v=vS5zTcqyktA&t=396s
Classic Albums: Queen: A Night at the Opera. TV episode from 1997. Focuses on the making of each song of the album. Features Brian and Roger.
https://www.youtube.com/watch?v=7YfQp3yhwh0
Inside the Rhapsody from 2002. Mini-Documentary that focuses on making of Bohemian Rhapsody. Features Brian.