How can I start a natural conversation with a Korean person?

I have been studying Korean for a long time, but I am only now seriously immersing myself in the language. In the process, I want to try talking to local Koreans, but it's not easy to muster the courage. Especially when there is confusion about grammar or specific words, it feels difficult to directly ask them questions. I have many questions about the Korean language, but approaching a group of Koreans to ask them is challenging. I didn't have this problem with other languages, but it seems particularly difficult with Korean. Do you have any tips or advice on how to naturally start a conversation with Koreans in areas like Gangnam or Hongdae? I would appreciate any insights you can share.