Everyday I am still surprised when it fomes to tech and computers even some of the most basic stuff such as how to setup a YouTube channel is still very foreign to many people to the point where they are actually willing to pay for someone to help them out. Literally, all you need to do is know how to sign up, confirm an e-mail and there ate those who are willing to pay people say $30 to do that. Not everyone is an expert in certain categories, but these examples should make you think how you may already have a skillset that is good enough to make a business out of.
Like here, the assumption is you will need to be someone with years of experience and a thorough portfolio to be professional enough to justify charging people. But there is a large portion of the population that literally knows nothing about a subject where you are considered the expert that they need. It’s similar to the example of how you may consider your native tongue not expert enough to be some professor writing complex books. However, if you were at another country where everyone was desperately trying to learn your language it’s most likely good enough.
Heck, even food can be the same thing to a certain extent as you don’t have to be trying to run a high-class restaurant if all you want to sell is lemonade.