A few things to consider for a low risk business. The example mentioned create large overhead with fixed costs. If you're looking to do something low risk you want high margins and low overhead. An example of this is would be anything where you take orders of a good or service before you actually possess the good or service. Note, creating money fast is not a driving factor you should have when starting the business. Create a sustainable model which will axiomatically develop sustainable profits in the long term. Lastly, take into consideration you business wont necessarily be profitable from the get-go as there's start up costs associated with doing such. However, your goal should be to make operating profits.
There's a lot of good information out there on how to start a business. I'd stay away from fad videos with headlines that read "get rich quick," and stick to notable articles.
There is evidence showing that 20% of new businesses fail in the first two years and about half will fail after five years.
I'm not trying to discourage you from starting your own business, but you should go in with your eyes open.
Unfortunately, there aren't any. Even in a coffee shop, there is rental, insurance, equipment, hiring, advertising, supplies, all of which must have an investment before the first customer walks in. A challenge of such businesses is that you are probably competing with other businesses, so it may take months before you attract enough customers to start earning a small profit. And that happens only after you have made a significant investment, so you may not recover enough revenue for a year or more before you have paid off your initial investment, plus the continuing monthly costs for all of the items. Investing in a business is like investing in the stock market. You may gain and you may lose. A business can be a good investment over the long term, but the first period is often where you are in debt. All the best in your pursuits.