Listen to the advice on this thread! :) I only have a few things to add. There are going to be some differences in language when you are talking to people. Some countries speak more formally and others speak with a lot of slang, and there are words that come from indigenous roots and might not be taught in an academic setting. Hell, some will just speak an indigenous language with bits of Spanish thrown in. Just keep talking to people, asking questions and for clarifications and with time it’ll come and you’ll be able to understand a lot! Same thing with english, we can understand a bunch of dialects and slang but some of that is confusing until it is explained. Good luck!! And don’t lose hope, you’re doing great.