Investing will never be risk free and finding 100% sure investments is pretty unlikely. But it does not mean that all investment opportunities are sketchy. Actually if you look and study carefully, you can find low risk investments that are established and very good for investments. Then as you learn more about how the market works, you can start learning about taking on high risk investments that might give you bigger rewards.
It's really important to figure out how much an asset is worth and look at its history before you invest in it. This can give you a good idea of what might happen in the future. Also, getting help from outside experts, like consultants, can be really useful. They can help you make smart decisions, save money, and understand how to invest better. If you're interested, I can suggest this place for outsourcing help:
https://theremotegroup.com/ Yeah I think it's the best way that you can be a very good trader. Yes you can learn from courses and teachers as well but until an unless you jump into the market you'll not get the exposure that you want to get from these teachers and courses.
Demo accounts are not also a great source because you'll not work that much to open a trade because you'll not have a fear of losing your money.