Both strategies seem to have their advantages to me.
Short-term trading is suitable for people with strong nervous system, good self-control and endurance. In this type of work it is important to make extremely quick decisions, quickly get a result that is not always positive. At the same time, in theory, this style is the most profitable.
But long-term, investment trading is practically impossible without knowledge of the fundamental situation. Since you should choose daily charts for this type of work, such trading will take no more than half an hour per day. However, you can see the first results only in 2-3 months.