The issue is that the internet is changing. The old ways of marketing products and services online don't really work well anywhere anymore. 

This is a time where unless you are paying a shit ton for ads pretending to be posts that get in front of enough thousands or millions of people. Just so you can have a 1-10% conversion rate. It isn't going to work well. You will be struggling. 

The best way for people to succeed in this transition time is to shift away from trying to have a large audience. Instead do your best to shift towards having an audience that actually cares about you. Providing real engagement and devotion. The numbers will be smaller, but over time they grow into loyal return customers. 

Keep at it. Use as many outlets as you deem necessary. Just know that what you are doing is hard. There is no easy solution without a major investment for continual advertising in disguise. Just keep at it and stay virtuous.