Always come off as rude.

Always come off as rude. I'm a covert stutter so i block alot, and I block most on the first thing i need to say, after that I'm pretty good with my speech.But whenever i need to say thank you or good bye, or just quick words like that I always block and say nothing or use a random filler word and i feel i come off as rude, It's really annoying Haha.