Most people don't do well in interviews. It's a strange environment with a complete stranger judging you. I myself struggle with networking, interviewing, etc. It doesn't come second nature to me, so I can understand you're feeling. But keep in mind:
When money is going out and nothing is coming in, it will put pressure on you.
Also as time passes and you haven't gotten a good offer, it'll put pressure on you too.
Your mindset will be different which will also change...