I was the same for a while, marshalling paintball and airsoft meant I saw some excellent scenarios, but I realised I don’t mind getting pinged, it was fine as long as everyone in the stramash was playing fair.
Ive adapted the same now when I get a chance to play, I don’t shit the bed if I get hit straight off the bat, nor do I get a stiffy if I get a run on the opposite team during play.
Marshalling/watching/standing back allows you to see how a game flows, if it works and ultimately how to hopefully win it, if you get involved 😉