OP, do you have experience in building a prosperous business? A personal case could be a really valuable source of knowledge, but in this case, it's basically a copy-paste with some rewriting.
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CONCLUSION
Let your purpose of establishing a business be on solving a problem not just to make money. If your reason to creat a business is to make money, you may get discourage within months if good profit weren't made. Establishing a prosperous business isn't easy, there’s a lot that goes into it. As you begin your business journey, keep these tips in mind, focus on planning, and take the time to test as much as possible. The more you prepare upfront, the more likely that your business will succeed.
The goal of any business is to make money, otherwise, it is not a business, but charity. Making money comes from solving problems, that is, the first follows from the second, and not vice versa. If you don't get a good profit (within a few months? why not weeks?

- do you want to earn too fast?

) and you are disappointed, then this is only an indicator of your inept actions as a business leader, and not because of an erroneously chosen goal (to earn money instead of solving problems, as you say).
It is impossible to prepare for a business in advance: in the process, there will still be problems trying to undermine success, which will have to be eliminated as they arise.