there is no such thing. You can see buy oportunity on 5 min cadnles and sell oportunity on 1h candles and again buy oportunity on 1d candles. When you invest seeing buy oportunity on 5 min candles you grab quick, small profit with low risk. When you see buy oportunity on 1h candles you are making less trades with higher risk. And so on. How the hell you want to daytrade (making lots of trades during 1 day) on 1 day candles ?

1 min candles - thing are goint too fast for normal user
5min candles - i love to trade on them. You can open trade for few min and grab qucik small profit with low risk. Good on bear market.
15min - 1h - longer candles bigger risk and higher expected profit and less trades per day better for stagnation and bull market
1h-1d - not for daytrader.

But there is no ultimate best strategy.