Street food is the best option for eating cheaply! I think eating from a street vendor is a good way to get a taste of the local cuisine. I purchased German sausage from a street vendor in Nürnberg.
I had an amazing bread cone in Budapest with little sausages covered in cheese. If you’re in Rome and come across zeppole, stop walking! In Italy, you can get your sweet tooth satisfied with more than just gelato.
In conclusion, all people of the world, if you haven’t traveled yet, why wait? There is a vast world just waiting to be discovered, and you can get your hands on it all!