As above, really suggest get your coaching badges. My eldest lad has been playing league football for 4yrs now currently in u14s. From my experience all the kids who take the football serious want to win & I have never come across any bad parents in fact the worse behaviour I have seen is from a coach. I would really suggest doing it, I love football & kids football is ace I have seen some amazing goals amazing comebacks & amazing capitulations.
The best teams I have seen playing are when the coaches/mangers have done the badges, good luck.