Best Regards
CHRIS
Trading is indeed the best way to earn bitcoin and it is possible to earn a living through it! However, long term trading which is also known as swing trading, is not a very suitable style of trading for a lot of people unless you invest a large sum of money! Because in long term trade, less numbers of trades are executed so you need larger amount in profit.
On the other hand, in day trade you will need to ride on the small changes in the market which doesn't require a lot of capital and you tend to execute more number of trades with small profit to make it up for you!
I would rather request you to visit youtube and learn about various trading strategies! You will find a lot of channels to learn there. I can personally name "Crypto Love" and " Bitcoin for beginners" because I got immensely benefitted from them during my initial days! Good luck!