In order to be more profitable in Bitcoin investment, you must be experienced and the investment must be maintained for a long time. Those who benefited from investing have long prolonged their investment, even they still retain their investment. For example, MicroStrategy, El Salvador and BlackRock have been investing in Bitcoin for a long time even though they have already seen success from their investments.
Totally.
Once you understand Bitcoin - you won't take it for any other thing on the market.
And you will definitely not trade/invest in it for a short-term gain.