Replying to HS Football

so my senior year, something i worked very hard for as football is my favorite organized sport. about the only thing that's equivalent to the feeling i get during skiing.

friday night we lost our sectional game against a team we should've beat, not because we didn't play to our ability, but because we were not prepared and we were out coached by the other team.

our pre-game pep talk was "dont worry about winning, go have fun" now i support this...but is it really more important on the varsity level to put having fun over preparing correctly in order to win. our coach is not very football smart as he is the offensive line coach calling our plays during the game. we added numerous plays to get an advantage at practice during the week like a motion and a wishbone formation...we used neither of these

its hard to get through my head that unless i play football in college, i may never put pads on again. so im asking any football fan, should a varsity coach put having fun over winning?