Can someone explain how the Texans record was awful when Deshaun Watson had a great statistical season? Non-Texans fan here.

I am a Panthers fan and I come in respect. I have followed NBA/NFL/CFB for awhile and I always like to dig into statistics but in a methodical way. I firmly believe that players such as Aaron Rodgers, Tom Brady, Peyton Manning, Russel Wilson can not lead a team to a 3-13 record after being in the league after a year. (Peyton went 3-13 in his rookie season, but I was never able to see him go 3-13 ever again besides his last season he was injured… and his defense was lockdown that year </3). These quarterbacks almost always average consistently good stats to great. I also want to put Deshaun Watson up there, but he went 4-12 while having an amazing year.
When looking into a 4-12 season, I'd start by looking at the QB. I start off by looking at TD's thrown. He threw for 33 TDs… so I have to disregard that. Then I'd look for interceptions, but he only threw a career low 7 interceptions. Then I'd look at pass accuracy. If he threw for above 60% and over 4k yards, then that's a good year. He threw for 70% and almost 5k yards.
So then I have to take my eyes off Deshaun Watson and take a look at rushing. I see that they had a very bad year in rushing and had only 10 rushing TDs compared to 17 the year before. They also had 83 first downs from rushing compared to 112 the year before with only 600 more yards in 2019. Watson threw for 3.8k yards in 2019 compared to 4.8k yards in 2020.

They had 1 less TD this year compared to 2019. Their defense was ranked 29th this year compared to 32nd in 2019.

Were you guys scoring more outside of the red zone and not converting as much or scoring in non critical moments? Were you guys having the 2016 Raiders season but inverse where they had things go their way in terms of scoring and key plays where if you take 1 play and change it each game they go 4-12 or something like that? I hope you guys do good again but I just didn't watch enough games last year of the Texans to see why.