Our stadium so small bro

Sorry but after watching this game our stadium looks smaller than some CA high schools, looks like a joke compared to other teams we’ve played. If we’re such a good program (ik we’ve never won a SINGLE championship but) why do we have a small 1960s stadium? Compared to other teams like Colorado that had only 1 win last year I thought we were like a big football school. With such a small stadium?