You said it yourself, students missing class, sleeping in class, not paying
attention in class happens in every class. Your relative performance and impact versus your peers should be measured. An average teacher should have an average amount of students missing class, sleeping in class, etc. and a superb teacher likely has less of that, and a bad teacher likely has more of that.
I manage security compliance assessments. Part of my job is relying on engineers to do their job. An average person at my job would leave engineers alone to do their thing and hope everything's in order come audit time. A better than average person is proactively working with engineers to identify gaps and issues before audit time. We're not living in a vacuum, every job requires working with other people. I am "graded" on how well I contribute to the success of others. I am partially responsible for audit findings, even though I may be doing my best to avoid them and ultimately not the person responsible for causing the finding, it's still in my purview and my performance is still graded on it.