Therefore, if the idea is really working, but there is not enough money for advertising, you will have to spend more time. During which it would be good to gradually move forward, not to get exhausted, not to lose faith, not to take offense - in general, not to drown. But how?
Secondly, do not listen to your friends and relatives - in general, close people. They do not believe in you because "there are no prophets in their own country." They are also uncomfortable with the new, from which they defend themselves. And they sincerely want to help you: to protect you from failure, difficulties, and disappointments.
Third, don't listen to the "experts". They don't really care what your idea is or whether there will be any sales. They get paid for advice, effort, and preparation. Not for results. So they will just pump the money out of you for as long as possible.
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