Investing and saving won't make you rich. It just prevents you from getting poor.
To change your life and do things you currently can't afford you will have to earn more money.
Your idea of an online course/content is great and there are a variety of side hustles you can start with very little money.
If you not born rich you probably have more human capital than financial capital. Financial capital grows with investing. human capital grows with hard work.
Put in the hours and you'll see the results.