There are many ways, but the one I would recommend the most if you are an introvert is to go to stores, look for stores where you can ask questions, such as clothing or shoe stores, the sellers are always somewhat extroverted people and they will try to talk to you. more than they can to sell you something, it is up to you whether or not you buy something, but the important thing about this is that you can start a conversation, try to ask things and practice it until it feels natural