One thing about Korean many people struggle with is the dynamics between people and speech. For native English speakers; especially if English if your only language, honorifics/formalities is something that doesn’t exist to a quarter of the extent as in Korean. Korean is a culture based highly around respect and knowing or understanding you position and others.
For beginners I would typically recommend just sticking with the polite 요 form as that is safe and pretty easy to understand but to truly speak with Koreans and integrate you need to understand the levels of Korean formalities and how, when, and where to use them.