If we are talking about just saving money here, well time deposit is the best though you will not expect big ROI, because you did not invest but to just allow the bank to keep it. It is much better if you invest atleast you will gain.
You have a good point, if you really want to save money you can actually put it on your online wallet, exchanges or deposit it in your bank. Investing your money is a great idea it will make your money growth more aside of that the benefits you may actually get if you were thinking about the future outcomes.