In a regular casino, yes I do felt shy the first time I try to gamble. But in an online casino where everyone is anonymous, I don't feel like it and also it's not hard to bet using cryptocurrency.
Why do you feel shy? I think that is common because its what other people said here. Its somewhat because of the fear of humiliation or not knowing anything about what you are doing. Being online makes it better.
Shyness is a natural thing from human nature, but only a few people are excessive in expressing it to the public in action, the feeling of shame must be avoided especially if you do poker game, you know that many players might be able to read your mind easily what cards do you have if you are shy