Everyone has different options but long-term investment seems safer than day trading. I have tried day trading in the past and the focus on charts makes it easy for me to panic and often sell if I lose more than 5% of my profit. I think day trading is hard work because you face daily risks and always focus a lot so just a small mistake will make you lose money.
Based on my psychology, long-term investment will be much better because there is no need to focus too much on price increases or decreases. It may take longer than expected but if there are high profits then I am willing to wait.
You are touching a very interesting topic, even if you have the skills to profit from day trading the psychology of the trader is more important because you do not have any time to really think about what you want to do or what you think about the market like you can do if you are a long term trader, you need to take decisions in seconds and if you show any doubt about what you are doing then most likely you will make mistakes and as we know that can be quite costly.