career path - I wasted six years of my life getting a PhD degree. What should I do, and how will I survive?

I struggled with low self confidence throughout my bachelors, masters and PhD in chemical engineering. After spending two years in Masters and six years in getting a PhD degree, I am lost at what I can do with my life.

Initially, my plan was to be in academia. Though I love doing research, I don't see that as a possibility anymore.

I did not do well in my PhD. I have only two first-author journal publications in ~2.5 impact factor journals. I did not acquire significant skills. I am bad at programming, and I have a 3.7 GPA. I did not learn to drive or learn any foreign language. I did not improve my health or developed a new hobby. I even did not spend time on having a relationship. In short, I have done nothing over the past six years.

My PhD supervisor has given me a postdoc position. And I feel extremely inadequate. I feel that I won't be able to do anything after my postdoc year, and I will just be a burden and disappointment to my parents.

I am an international student living in the US.

I don't know what I should do. What should I do?