Your question is really broad, nobody can answer that if you don't specify what kind of business are you trying to do. Are you trying to start a dropshipping business? Where do live? Is there any marketplace platform that serves your area? Do you want to be a photographer that has a studio? What about your competition? How much capital do you have to start your business? There's no one answer for these.
Yeah, you are very correct, mate. The OP did not specifically place the topic well, which will make it difficult to provide a correct answer to what he seeks.
@OP, which type of business are you looking to start?
Well, I can only give you a few common tips, which are:
If you are looking to advertise your business or the products you sell, you should do some ads on Facebook and also on the on the Facebook market. You can create some short videos about your business and publish them on TikTok, YouTube, the X app, LinkedIn, etc.
Also, if you want to run a good business, you should sell a product that is usually the daily demand of people, and you must do some surveying to identify the areas where the demand for your service is vast.