For future reference, all games for the team in your primary market are always available on free TV. So all the Bills games in Buffalo area were or will be broadcast free, over-the-air this year, including the games on ESPN, NFL Network, Amazon, and Peacock.
Or KNBC 4 in Los Angeles or on your mobile device on NFL+ (with a paid subscription). (Or abroad, where Peacock doesn't have the rights.) And we won't talk about the other, nefarious means.