I am not a professional photographer – and you should be happy about that.
Because I might not have a long education as a photographer behind me.
But on the other hand, I can still remember what it was like, getting mixed up about all that aperture and depth of field stuff, having to decide about using flash (or not), getting photos that were too dark (or light), etc.
Things that many professional photographers know by heart – therefore often forgetting that us “happy amateurs” aren’t always right on top of it.
So even though there are a great many great teachers among the professional photographers, I have, unfortunately, experienced the opposite as well.