Give him time, it is only his 2nd game!!!!!!
He doesn't have the players to run his system. Give him a few years to recruit & he can take Nebraska back to the promise land.
Nebraska's biggest problem imo was they couldn't land the skill players anymore in the QB or WR position. We are in a new era of college football where passing attacks are a big part of the game & Nebraska didn't go with the times.
Since they didn't go with the times, they had no shot at getting the big names to come to Nebraska. Now with Callahan at the helm & the philosophy being much different, watch him start getting the big names to come to Nebraska as they have the name recognition & now the philosophy to match it.