Save my company :(

A little story about me.

My name is Nikola, I am 28 years old and I live in Croatia.
In 2014, I opened my own company
When I opened my company, I had no support from anyone, friends, family, girlfriends, everyone told me what I was doing. That companies that have everything are failing and I am opening my company without anything.
I had some vision of my own and the desire to succeed was stronger than fear of failure.
In the beginning it was very difficult, I worked for my company and another job in another company to be able to cover all costs. There were a lot of ups and downs, I worked from morning to night. When it was hard for me I would watch some motivational video on youtube and how other managed to achieve all this.In Croatia it is quite difficult to find a good client if you do not have a connection, most are through acquaintances and that's the biggest problem for success. All the time I tried, everywhere I pushed just to get one bigger client because that would mean a lot of success. When you do things for some malls then there are much higher amounts and you can afford a better machine to work and the similar. Somewhere around 6 years I wait for that day for something like that to happen to me, 6 years of nervousness, sleepless nights and everything else. Finally a couple of days ago that day came, a big and very good client called me for business cooperation and that's where it came from problem.This The day I waited so long for came.This whole situation with the virus hit me hard, nothing worked for a couple of months and I had to pay for everything. The day I waited 6 years is not happy because now i don't have how to buy one machine and cover all the costs for that first order for a big client.6 years have been waiting and obviously i will have to turn down the job, i'm honestly on the edge.I really don't know what to do, i know it's not easy for anyone but this is really too much, I have a feeling that everything is against me and no matter how hard I try it is not good again, that day comes and I now have no way to realize it and such an opportunity for such a job is rarely given..I sit, cry,and i dont know what to do.I am trying to somehow gather strength to go further, but because of that small amount of money I have no way forward.This site and you people are my last chance,please help me.