It’s kind of obvious but when troubleshooting really try to think about things logically “What works? What doesn’t work?” goes a long way.

It’s pretty easy to get worked up and take leaps like “This printer must be broken” for example but if you think about the processes along the way it can help. Are there any signs of life? Has this ever worked? Did it work on a different computer? Is the cable fine? And so on.

Basically taking a step back and being more methodical.