I feel your pain. Things that helped me is say something that is not hey or hello. Go off by “is that your car” or idk think of anything to start off the conversation. Then say nice to meet you or normal greetings. I have the same problem and I work in insurance. “Most” people won’t care unless they already have an attitude. Just go out there and try. Trust me I failed so many times. I called people and I couldn’t say a word. Just keep trying until you get the hang of it. It’s not going to go away.