How can I become a video editor with Adobe Premiere?
Premiere is simply a tool. While learning how to use it will give you some experience and you can experiment to find out techniques, it will not teach you how to be a video editor.

Same with the other video editors.

If you want to become a professional video editor, there are college courses in this, some lasting 3 years or more, which will give you techniques, skills, training etc in concepts, the mental and artistic processes you will require etc., as well as training you in the tools.