Not that I'm any kind of expert or specialist in this, but when I took my macbook to the repair shop, they recommended me to install various programs like iStat Menus to keep track of all aspects of the system without any complicated actions. I read more about it in article https://setapp.com/how-to/kernel-task-high-cpu, but did I understand anything? Not really. If you can explain to me more clearly why I need to keep track of these parameters and what this knowledge will do for me, I'd be happy to.