You may have a conversion problem, or a measurement problem, but you DO NOT have a traffic problem.
It's readily available everywhere. The trick is to find the best traffic at the lowest cost.
That costs could be money, time, or both, but you'll need to pick one to favor.
If you have a small budget, then you'll go after the cheaper traffic options.
If you have a bigger budget you can go be a little more liberal with your spending.
But one thing you CAN NOT do is have a zero budget. No business in the history of business has had a zero budget and survived, neither will yours.
The key is to figure out the optimal strategy for return on your investment, then turn on the traffic faucets and let it come in!