I currently am shooting high school and university sports (ice hockey, lacrosse, baseball, etc). Lighting varies dramatically from day to night and indoor outdoor. It is a side job. I sell images to parents. The schools use for social posts etc. I am shooting with D850, 70-200 f/2.8. I have TC 1.4 and 2.0. I feel my reach is limited in bigger fields and cropping pics does not give pro results I'm looking for. I was considering buying Nikon 120-300 f2.8. If I add TC 1.4 I have a 420mm f/3.5 which should be good in most light to freeze action. Question is this. Most Z lens' are not f/2.8. I see many pros using Z zooms/primes with f/4 and above. Would a change to Z8, Z9 and S lens be better than the 120-300 f2.8 choice?? I'm happy with D850 overall. Do mirrorless body and lens perform that much better in low light at higher ISO and f stops that F/2.8 lens not necessary??