sometimes daily trading is interesting but it requires courage and strong conviction to get profit and avoid loss. In the related article shown by Op, there is a way that I often do in daily trading, namely by exploiting the price difference called by Op (Arbitrage Crypto) where I always compare prices one by one for each exchange before making a sale, the aim is to can get a little higher profit, besides, don't forget to consider the transaction costs that must be incurred for each exchange because each exchange has a different transaction fee.
In fact, you said everything correctly, but for me today the fact of a profitable transaction plays the most important role. if someone is worried about the amount of commissions and so on, then for this you can choose a more suitable cryptocurrency exchange for your activities, as in my case, the choice fell on binance. In addition, I also constantly lack the courage to place the correct order and it seems that all these obstacles in front of a novice trader arise from a lack of experience.