In my opinion I'd rather to say that it is better to invest your money than saving your money in the bank and having A small interest of it. But when you invest your money you have to take a risk because not all investing companies are good there are circumstances that it will turn to scam. Because most of them are only good at first . So in that case it is still your choice on how are you going to grow your money.
Somehow you should also save money because whenever there are emergencies youe have it on your bank. You don't need to invest all your money. That's a big no no but when it comes to earnings the investing is better than savings.
Yes, money must work in an investment and thus they can bring more profit and make a person wealthier than they will simply lie without moving.