<200k Revenue In Year 3 - Keep Going Or Give Up?

TL;DR: I'm lost, defeated, burnt out. I could keep going and hope for the best/luck or quit and build a stable career as long as that's still possible.

After finishing my Bachelor's in Comp. Sci. in Germany I started working and tried out some startup ideas here and there. I wanted to run my own business no matter what. I hated working on tickets for someone else. Obviously all my ideas where pretty techy, had no market and thus failed.

Then an opportunity opened to freelance as IT-Support for the company my father worked at (a machine shop). I talked about it with my buddy I did the startup projects with and we agreed we'd give this a shot but handle it like a business from the start.

We founded a C-Corp and startet working on our business model. We had stuff to do, infrastructure needed to be built, tools to be evaluated. During that phase almost all our still existing and best paying customers came in through word of mouth.

Then it became quite.

We tried marketing with flyers and banner ads (physical PVC ones) and even ended up trying cold calling and D2D. It was a miserable time. We stopped the cold stuff but kept the banners since they worked okay but still: Customers dripped in one by one month after month. The customers we got also where the opposite of spending happy. I had to look at someone decide against investing 200 bucks for a WiFi router and just accepting to have no WiFi in his office instead.

So here we are. Numbers:

Y1: 40k revenue, a few thousand losses

Y2: 100k revenue, about 15k profit

Y3 (now): Probably between 100k and 150k revenue

We came by until now mostly without paying us a huge salary or by working part time in the first year. Now my partner had to go back to working almost full time as a dev since the money coming in just isn't cutting it for the both of us. I basically have nothing to go back to and need to support my wife and two small children.

I stopped working _on_ the business a few weeks ago and am rn just keeping it alive basically. This sums up to less than 15h/week. I use the rest of my time to reflect on my situation. So far I think that I am where I am because of multiple factors: We had no network to start with and are both not especially extroverted. We had little money to spend on marketing. We have no sales background. Our market is saturated and the overall economy here is in shambles. We could go over and over talking about how to change the offering, we have no one to offer it to.

Options: I could just coast by and see what happens, enjoy seeing my kids grow up, spend time outside, idk. Or I could quit and start over on my career. The thought of having to ask for permission to spend my toddlers birthday at home with him haunts me though.

If you have ANY questions, feel free to ask.