What do you mean by defective? In what way? I have to know because you apparently have a skill. There are resources to get your skills marketed such as at an agency.
You had a good run for 7 years, can you get more training or, perhaps move laterally to another are of your profession?

I don't know that not having friends is a sign of being defective. I have very few friends IRL. Let's see there is my wife, a person at work, a few from PC that I have never met and my cat Edamoe. I guess I could call myself defective if we go by how many friends I have.

Why are you so down on yourself? Look at this end to your contract as an opportunity to move forward. I like change, in fact I quit my present job 4 times over the last 21 years and was rehired every time I applied. Perhaps this is a sign that it is time for greater events in your life.

I don't know you, but I bet you didn't predict that I would respond to your post. Things will work out for you if you want them to. Try to relax, and if you don't need to be re-employed right away, it would be a good time to take the opportunity to relax and go on a vacation. Things will sometimes look better after we have given some time to meditate on other things.

Good luck to you.