I would do the following:
1) Get to stable profitability (raise prices / find costs to cut)
2) Find adjacent markets to go after (what other stuff are your customers buying? What other stuff could your specialized team be good at?)
3) Put together a deck and sell to PE (you won’t be able to tell a unicorn story but sounds like to have a stable biz here)
You are depressed and it’s impacting your leadership. Take a vacation, find a therapist, and get back into it!
I love talking about this stuff, feel free to PM.