I think there's no definition of quality that is completely right or wrong. But I always find it intriguing to see what context others use when trying to define quality. Just like Stuart Crocker here.
This is a very interesting question that you might have always been interested in but never really dared to ask the manager directly. So what do QA managers really do? There are plenty of responses in this Reddit thread!
Thinking about how to approach testing in a new project? Rubén Rubio faced a similar challenge and wrote down which strategies and tools he chose for each level of tests.