Cold starting issues with my Trailblazer?... any advice?

Hello, I recently purchased a 2021 Trailblazer and overall I’ve been super happy with it. However, an odd problem started yesterday when the temps dropped below 40. The car wouldn’t start at first, and once I got it going, I took it to AutoZone, where they reported that the battery, starter, and ignition system are all fine. It did it again this morning. I’m looking for any advice on what might be going on.

Do you keep a car charger or anything plugged into the 12v ports of the vehicle overnight? That can sometimes drain the battery.