Do you only trade according to the trend or you counter-trend trade from time to time?
As a trader, you cannot trade against the trend, obviously, although they are different types of trading, so basically you did not classify the one you are talking about, but in one way, what I know is that you can't trade against the market trend, especially if you are into spot trading. Following the trend is one of the favorable things a trader will do to make money; without that, the risk will be higher.
Trading only on one side or following one strategy will never make you a good trader. To become a skilled trader, the trader should start trading after knowing the trading related knowledge. Trading when there is a trend in the market increases the chances of profit. However, in any favorable or unfavorable conditions, when the trader can gain the courage to trade according to the market position, he will be able to make profit if he trades. If he decides to trade, he must take risks. Trading with the sole intention of making a profit increases the chances of losing. Every trader must be thoroughly researched before taking a new entry in trading.
Did you think so? Because, in my opinion, mastering one strategy as a trader is one thing that a trader is supposed to do so that he or she can have his own strategy they use while trading, but a trader using a different strategy is at high risk of losing money even if he knows how to trade.
However, I don't think if someone trades with the intention of making profit, there is an increasing chance of losing money because the main aim is to make money. If you want to say things that are increasing a trader's chance of losing money, it is insufficient knowledge, greed, and a and a lack of emotional control, but putting in mind that you need profit is not an issue.