Entrepreneur

Starting from zero selling any product is a massive undertaking. The market you are thinking about going after is beyond saturated which means you are going to need to work even harder to close deals. Custumers are going to be price sensitive over what will seem like small amounts of money. Your team uses a tech stack that indicates they are generalists, which means you are looking at maybe 2 major customer profiles: pre-product dreamers with money, mid-sized non-technical companies looking to launch a product they don't really understand. If your team doesn't have an awesome portfolio, and hasn't built projects for known companies, winning deals on price is probably your best bet. That lays the foundation for answering your question: where to find customers. Dreamers are going to be hyper-local. They want to meet face-to-face with the person doing the work. If you aren't located in a major city demand is going to be low. Attending local startup events, business networking events, and industry meetups is a place to start. The other group can be found mostly at industry specific conferences, so you would need to invest money upfront to attend and build a network in a particular vertical you believe to be promising. You can try buying ads, you can try finding companies that already have crappy web/mobile apps, or messaging every person looking for a technical co-founder. None of those are going to make you very much money because your hit rate will be 1/100th of what you would expect. I'm usually not this negative but I can't overemphasize how truly saturated this market is. You are competing with every freelancer from every country with an internet connection and decent English. I hope this is at least somewhat helpful for you.