The same advice works for job seeking that works for dating: you are looking for somewhere (vs. someone) that is compatible with you.
Many, many places (or people) are not going to be what you need, or you aren't what they need. So the quest to find the right one is always going to take a while.
The more desperate you become, thinking you are the problem, the more you become the problem. Just breathe and realize you are who you are and it just takes time.
If any interview ever makes you feel bad or too desperate, just get up and walk out. You can, you're a free person. There is some job somewhere that is right for you, it just takes time to find it.