You can spend few hours only to trading daily there no need for you to force yourself to spend more time in trading. Those people can spend too much time high chance for them to earn a lot but in your situation did not carry too much time work in trading just spend few hours only it is still good. Many traders are earn money because they did know what they do try avoid stress too.
Trading is not like how many hours you spend on it, neither spending more time on trading will grantee you will do successful trades. Trading depends upon your experience and knowledge. If you have full technical and fundamental knowledge you can make good trades without spending too much time online. However traders still need to monitor the market constantly as the crypto market changes very frequently.
Everything that you say is correct, but you will never get this experience and knowledge without spending time. The time is needed for your self-education (it includes reading books, watching videos) and on practice.