Not necessarily. There are traders who are successful crypto traders and trade part-time. Success depends on your financial goals and wins, so there is no definite answer to it. Your trading method is also important here. If you're a long time trader, you require more hours.
For a newbie seems you know in regards to trading and that's a good thing and you hit it right there. There are traders who focus on the long term perspective and the results of holding some coins/tokens are still great. So, it doesn't really matter on the focus sometimes your strategy and behavior does.