There are a lot of factors that have gone into Nebraska's struggles the last several years.
3 coaches in five years, led to a ton of roster turnover. Big changes in offensive and defensive schemes led to a bunch of players that didn't quite fit in the systems, many left and many were square pegs in round holes.
Poor in game coaching and decision making from the QB position made the results much worse than they had to be the last few years. Nebraska has flat given away a bunch of games lately. Just last year without AM's INT in the endzone against NW and CTB's muffed punt against Iowa, we win both games and are right in the hunt to win the division.
Bad luck with injuries also took a toll on Nebraska. In 2019 we lost three kickers to season ending injuries. We couldn't kick FG's and had to pouch kick kickoffs, which cost us multiple games. In 2018 AM was intentionally hurt against Colorado, which not only cost us that game, but the next against Troy. Those are crazy outside the ordinary injuries. We wish we had the depth and/or coaching to overcome those, but we have not.
So what has caused all of Mizzou's struggles over the same time frame and why are fans so confident this coach is an improvement? He didn't show any improvement last year. Is the optimism purely based on early recruiting results?