Starting a business is sort of like starting a family, if you wait till the right time you're never going to take you have enough time or money 🤷🏻♀️
I've had an online business since 2004, and I've been self employed a lot longer than that. And my experience, getting a really good, robust Google AdWords account up and running is your best bet. Get yourself a decent website, if you're going to sell online goods, Shopify is really good. If you're providing a service, I'm partial to wordpress, but I've used and liked both.
If you're selling something, get yourself an Etsy shop that directs people back to your website, you can set up an Amazon business account, and do lots of social media.
The other thing is, wealth and abundance are more than just money in the bank. There's a conscious and an unconscious economy, and bartering is alive and well in the conscious economy. One way to save money is by having a garden, and you can do that in a little rental space. You can also go to farmers markets and buy their seconds and put that food up, and I've met a lot of farmers who will trade you their seconds at the end of the day if you'll help them in their booth.
There are a LOT of ways to make money on this planet, if 12-year-olds can become millionaires I'm sure you can figure it out too! The one thing I've learned in being self-employed for over 20 years, is that people who are afraid to follow their dreams will always try to discourage yours. And, if you don't follow your dreams you'll always be working for someone else who did.
Go for it. Worst case scenario, doesn't work out you go do something else 🤷🏻♀️
Best case, and most likely scenario, is it you'll do fine , and the thing is, it's not really work if you love what you're doing.
Good luck to you!