RealGM

Despite being a blowout loss the Browns-49ers game did very well:
https://www.cleveland.com/entertainment/2019/10/browns-monday-night-football-ratings-dip-as-viewer-fatigue-sets-in.html
Browns-Rams game did okay:
https://www.cleveland.com/entertainment/2019/09/browns-rams-sunday-night-football-game-clobbers-emmys-awards-in-tv-ratings.html
Browns-Bengals game this year did very well:
https://brownswire.usatoday.com/2020/09/19/browns-vs-bengals-week-2-ratings-record-for-streaming-platforms-nfl-tv-ratings/
Maybe they deserve more TV games?

Browns-Jets games have also done very well:
https://www.cleveland.com/entertainment/2019/09/browns-jets-delivers-big-ratings-for-espns-monday-night-football.html
https://brownswire.usatoday.com/2018/09/22/browns-big-win-on-thursday-night-produced-huge-tv-ratings/
I've seen no reason to believe the Browns do poorly in the ratings.

12.4 million viewers for Monday's game. Another ratings winner.

https://www.cleveland.com/browns/2021/01/browns-steelers-playoff-game-delivers-huge-ratings-for-nbc.html#:~:text=CLEVELAND%2C%20Ohio%20%2D%2D%20The%20Cleveland,February%2C%20according%20to%20NBC%20Sports.
I can't find anything about the Chiefs game, but the Browns-Steelers game was a success.