system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] How common are force sensitive people, and how common is it for a force sensitive person to choose the Dark side of the force?
gpt
Not a complete answer, but there are force sensitive people, and then there are those among them that realise it and may choose to dedicate their lives to mastering their connection to the Force. These individuals undergo training, the two most common pathways being the Jedi and the Sith. There are off-shoots and branch paths, like the Grey Jedi.

I may be wrong, but there are probably dark side Force using normals who aren't exactly "Sith" or evil, just assholes, chanelling anger and such.