Obviously that it depends on the kind of trade that you are going to do. If you saw some previous notices about that altcoin, then the best thing that you can do is just to analyze it with the 4h - 12h charts, because they show you the whole movement during the day.
But for scalping, then 1minute and 5minutes are the best ones, because you can just look at the price at the moment and it is better, because you can easily make profit from those candles, lmao
It is just the way that you use to trade, just try to acostumbrate to it.