Have you checked your battery, 3-4 years old, could be bad…
Sorry to say but a 2021 is not a brand new vehicle, it is 3-4 years old…
If you have NO test equipment, then after driving the vehicle for a while, once home and key off, turn your heads lights on for about 15-20 minutes, then try to start the vehicle, if it doesn’t start then your battery probably requires replacing, if it does start normally then you will either have to find someone that can do a proper current draw, or simple remove your infotainment system (radio) fuse when the vehicle will not be driven for a few days to see if it is on that circuit or not…
Here are some good videos to watch…
BTW, your infotainment system is light years away from Georges 30 year old radio…