I hate that my communication is All or nothing

I’ve been told many times that I’m well spoken and articulate.

and I’ve had many more times were people just stare at me In disbelief as if I spoke some Martian language, or misunderstand and give a response to something I wasn’t actually saying or get upset with me. there’s no in between.

I can’t communicate casually. I’m either super good at communicating or incomprehensible. and I have absolutely no control over it. somedays I just randomly become less afraid of people and am better at communicating. Im very lonely and I hate that I’m like this socially because it’s so frustrating to know I CAN enjoy social interac