As a trader you must work on strategy development instead of trying to adopt different strategies, you can only try a different approach if the system you are using isn't really profitable. The problem with a lot of traders is that they get carried away easily by a lot of trading sf trading strategies they come across online by different traders not knowing whethr if these traders really make enough profit from it. One strategy that works is enough, you don't need multiple strategies to be in profit. This is why going for knowledge first is of utmost importance.
If you already know that there will be situations that we cannot predict when trading, of course it would be better to be able to master several strategies so that when facing unexpected situations, we will be able to try other strategies to be able to reduce the risk of loss or be able to make a profit even though it is small.
When someone learns trading online and they don't really know whether they have good trading skills or not, of course this will make us fail when we are going to trade and if they do have good skills, of course this will not be a problem for us.
Having knowledge is of course very important for anyone who is going to trade because without knowledge of course they will only spend the money they use in trading and only luck can give profit to their trading.