​I saved about 18k, what are some solid businesses I could start with this capital?

Over the last 2-3 years I have saved roughly 18k slaving away at my sales job. I have the money sitting in a high yield savings account but I want to leverage this cash so I can grow it even faster. I’ve always had the goal of owning my own business but to be honest I’m not even sure where to start. I have a background in marketing, sales and song composing but I am always down to learn new skillsets. Is there any reccs you guys have on busineses to start that dont require and insane amount of capital and have a relatively lower failure rate? Thank you for your input!