What are online CTFs? My advice would be to try your hand at some other aspects of programming. Games are hard to break into. Have you tried building websites or apps? Put that drawing practice into use on some cool websites. Try and teach yourself backend programming using ruby on rails. Build a portfolio website. Buy yourself some server space and learn how to set it up. Setting up a portfolio and creating websites, showing off games (if you do want to pursue that) and anything else you code up is probably the best thing you can do for your career while you're in school.