It seems difficult to say that daily trading can be said to be the best, in fact this trading has a much greater risk of losing your money than spot. Indeed, if we learn and apply it in the market, it will give us experience or knowledge when we trade, whether there are mistakes in our analysis, if there are any, of course we will correct them later when we want to trade again.
To master anything one need to get necessary experience in that aspect of trading and that can be only done by actually diving into it. Having said that it's correct to say that long term trading (like DCA) has edge over short term trading, we can see historical data of Bitcoin to support that argument. There are people who do day trading and are successful in it because they have spent there time to master that skill. If you want risk free trading there go for long term investment.