Hi STT,
I can understand your point of view. It really is scary to go to an interview.
But, you have said quite a few negative things in your post and I wonder whether you are even aware of this negative twist you are putting on the interview already?

I think you need to stop reinforcing those negative thoughts about what you cannot do and what you find difficult. Seriously, if you go in with that sort of thinking, they will get that sort of feedback from you.

So, positive points please: Believe it or not, most negatives can be turned into positives. The people who do this in the interview will be much more appealing to the interviewers.

So here is my go at pulling out the pros from what you have said: (some may be off base but I haven't much to go on so please forgive any errors!)

You enjoy a work environment where you can get to know people well and work with them as a team.
(as I get more acquainted with strangers and interact with them regularly I feel okay around them. )

You can work independently and are self-sufficient.
(I’m even hesitate to request help from others)

You are open to new things and keen to learn
(I have no experience of working at any firm before but you have applied for this new job)

This job is important to you, you have ambition, and you are driven to succeed at it.
(I am quite tensed about my career. I sort of shiver in fear,You feal fear because it is important to you)