In my area they are pretty much solitary. We never see more than one at a time.
We’ve had just one coyote attack locally that I’m aware, a schoolgirl waiting on a bus. Her parents fortunately were there, saw what was going on, ran out stopped the attack and tried to shoot it but it got away. Girl wasn’t severely injured. Very fortunate, she’s a small girl. Coyotes locally have only fairly recently reached sufficient number that you can hear them howling sometimes at night. Prior to that, if you saw a coyote it was solitary. A lot of people probably think it’s just a skinny, scruffy mixed breed stray dog and don’t realize what it is.
One night last winter my neighbor and I killed 3 in the woods at the back end of my property, but we still see them on our game cameras. They are depressing the Whitetail population, and need to go.
They are more active at night. I only see one at a time but I have heard several of them both in the same location together and separated by several hundred yard many times. Last time was the other night about 2:30 am. One night right after dark they were about 100 ft from me or less down in the woods.
For what it's worth they are invading densely human populated areas now as well. I chased one through Oak Ridge, Tn one night trying to run over it and it was a Yote. It held 30-35 mph for a quarter mile then jumped a concrete median about 4 ft high.