You have an excellent question. As with most excellent questions, the answer is - it depends. What does it depend on? A couple things:
1) Could your invention be a business? - Not all inventions can. Some inventions might solve a problem in a way that's superior to any other, but if it can't be scaled (e.g. can't be manufactured in a way that brings cost below price by a sustainable margin, is not sufficiently differentiated from competition to attract customers, market of potential customers is not large enough to justify start-up costs, etc.) then there's no business. Keep in mind though - just because one person may not be able to turn an invention into a business doesn't mean it doesn't have value. An invention could be patented and then sold (or licensed) to a company with complementary characteristics from which value could be derived from synergies between the invention and their existing product (e.g. the company already has an established presence in the target market of the invention, the company manufactures their existing product in a similar way such that existing infrastructure could be utilized).
2) Do you want to be an entrepreneur? - If your invention could be a business that you could start yourself, the next question to ask is whether you want to be an entrepreneur. Successful entrepreneurs often work long hours for long periods of time trying to get their businesses off the ground, and even then success is scarce. Read about successful entrepreneurs (and unsuccessful entrepreneurs) to learn more about the sheer size of the risks and rewards involved, and whether such a lifestyle works for you (one insightful resource from an experienced entrepreneur - http://www.paulgraham.com/articles.html)
After careful reflection, if you're leaning toward 'yes' to both questions, then starting down the path of launching a business is next. If not, then selling (or licensing) your inventions to another individual or company with the means to bring it to market might be the best path. Whether you decide to start your own business or sell / license your invention as is, you'll likely want to apply for a patent. Patenting a product is not cheap (https://www.legalzoom.com/articles/how-much-does-a-patent-cost), but it's likely much cheaper than costs needed to launch a business. Here's a good article I stumbled across that may be helpful on the topic of applying for patents (https://www.entrepreneur.com/article/204918).
I'm far from an expert on this topic, but hopefully these thoughts help you find a path to more relevant resources. Best of luck to you!