u/PressureDirect2499

I am a 18M who wants to travel the world for a summer but I don’t have the money for plane tickets. I was wondering where I could find cheap plane tickets just to get me over to like Japan. I want to explore Japan and other countries. Is it possible to get a sponsorship from someone in some kind of way. I would like to do it next summer if anyone is willing to help or at least give me some advice on what I should do.