When you make new friends you should always greet them and say your name, but if you are shy like me or embarrassed also like me you should just say ''Hi!"
Making new friends is hard but it's ok. It's ok if you are shy or embarrassed because I felt that way too many millions and millions of times before.
Once you say something to someone like your name it will feel great that you got that out of you. So be happy and be friendly!