For the last 10 years, there are patterns for whether a playoff game was won by the home (H) or the visiting (V) teams:
Wildcard Rounds
The NFL is onto their fourth season with six Wild Card round games instead of the historical four. Typically this round is rich in visitors winning which is surprising given that all home teams are division winners. In 2020, there were only two home (division winners) teams that won and advanced to the Divisional Round. And then it changed in 2021 with only one visitor advancing. Last year, it was just two.