What are the best fediverse alternatives to youtube? and what makes them so good, what are the rules? are they all open source?

ive been wanting to start gaming videos or maybe nsfw gaming, idk tha tmight be too much? youtube just seems to strict for theses things and im not sure where to post videos/content at.

also im in highschool but im old enough to use the fediverse. by chance am i being to akward, if so im sorry im just very akward.