Drawing stick figures on note paper counts as creativity. Hell, XKCD has an entire long-running comic out of just stick figures.
If you have a phone with a camera you can try playing with taking photos, and editing those in creative ways as well.
At the end of the day, though, everyone starts somewhere and being “great” at something is irrelevant as long as you enjoy what you’re doing. Practice can help you get better, but being creative is mainly about having a fun activity that makes you happy.