What are the options when you exhaust your savings and your startup goes bust?

Go back into the corporate world? How do you fit as a corporate employee after being a founder?

A founder is a generalist. Being a corporate employee requires you to be a cog in a machine -- a specialist. I feel like as a founder, I may have become unemployable because my skills have become too vast with low depth.

Wearing multiple hats have taught me various disciplines but not enough to add depth. I don't know enough of software engineering to become a software engineer at a tech company. Don't know enough of marketing to become a marketing manager. After starting a startup, I've become a jack of all trades and master of none.

How will I even find a job now? How will I sustain? Future looks so bleak.