Mazda 3 BP battery drains/problems?

Hello, it’s about the following problem child of my girlfriend: Mazda 3BP Skyactive G122 with EZ 6/2020. About 2 weeks ago she cleaned the car and ran the radio (Bose Soundsystem) beside about 45min. After that we wanted to go away and the little one could not start again, battery under 12V. Bridged, driven a bigger lap, then 2 days the battery charged, was at the end again full, acid measurement value as well as voltage as new. Until yesterday no problems, car is / was every day about 60km then the car went yesterday because of a parking damage to a paint shop, today the call, he did not get started, had to be bridged and he showed an error message. (Photo of the message was taken, I get tomorrow when the car is fetched again) Is there a Mazda mechanic here and is something known about it? Cann’t it be that the battery is dead during a daily long distance after not even 3 years? Time Mazda Kulant and maybe there’s a new battery or Is he already too “old” for that? Thanks already in advance