Howdy,
Not using a mic is entirely fine and understandable but it does make it a bit more difficult to maintain a crew because people are often focused on that. It might be a bit discouraging when trying to find people that are cool playing that way but they do exist and they are out there, so I hope you keep trying to branch out, if that is what you wanna do.
Nothing wrong with being shy and nothing wrong with not using a mic. You can play just fine without one. It's awesome you are trying to find people to play with and reaching out in a public way.
I hope it works out and you find awesome adventure with others.