Oh bro !! I can feel you.. My ielts speaking score went down to 6.. I’m doing my PhD in Germany and my PI asked do I need any special help or is there any special way of presentations I needed to ? Sometimes it hurt but most of the times people don’t know and they wanna help you and hence they ask these questions.. I would tell ignore these and take the good things ! You can’t waste your time in this, u need to get used to it.. Instead try doing some speaking tricks ! When I say my name is.. I used to pause or make some hmmm sound so I can do it in a nicer way ! Don’t be anxious, ofc it is going to stutter but you can rise up and do better when you’re cool !!