First of all, I think your stuttering isn't that bad (for example it's much much better than mine tbh). Because you don't have many facial reactions and you can overall speak your mind easily. I don't really know the exact answer to your question, so I will let more knowledgeable members of this sub help you there, but I noticed that you are short of breath this whole clip. So maybe try to calm yourself a little, maybe pause for a second and take some deep breaths, and overall don't be in a hurry when you speak. Have a good day ✌️