People shouldn't look at luck as a reason a '22 TCU beats UM.
In spots, luck is a constant.
In baseball, BABIP seems to be a true element of chance/luck. A pitcher can allow the same HRs, stirke out the same number of batters, and walk the same number of guys, but his BABIP allowed in any given season can swing pretty wildly. One year 37% of batted balls turn out to be hits, the next it's only 28%. There's an average of this stat (~.300), but even the all-time greats see ebbs and flows. Same with batters' BABIP on offense.
In football, a much more difficult sport to assign credit, there is certainly a luck element constant.
We may not know what all it is, or how to dole it out, but I'm sure it's there.