Understanding ourselves and our natural inclinations is an important to improving ourselves. Do I naturally find faults in others or see what good they do? Understanding this will make you aware of what you don’t do, so you can try to compensate since both important. Not all employees are the same. Some have qualities that lean towards x or y and how we interact with that person may depend on that.

Do you have any motivation tips to share, be it as a team leader or member? Do you think Y is inherently better than X or that it depends on the employee?

One motivation technique is positive reinforcement by always recognizing a person for something they did with body language that shows you appreciate it. (looking directly at them, smile, etc)
I don’t believe Y is better because there are unmotivated people who do a damn good job but prefer to only do what they need to do and leave. In that respect, would you prefer a Y personality employee who is motivated but lacks some of the required knowledge or an X employee who does what they are told to do?
(The theory X make people who like to be led and lack ambition seem like they are also stupid and incompetent but it is possible to be smart but unambitious. Assume the latter for the previous question)