Can’t play music through my car speakers

My first iPhone was iPhone 6 Plus, I had no problem to play music trough my car speakers then, until I replaced it with iPhone XR. I couldn’t transfer my data to the iPhone XR, so I took it to the Apple store and ever since then I could no longer play music through my car speakers, every time when I plugged the usb to my phone, it said “unreadable “. I can make phone calls or answer ones no problem, I also can use Google maps trough the speakers. My family who also have iPhone can play their music through the car speakers without any problem at all. Last week I’ve replaced my iPhone XR with iPhone 13, hoping the problem will be resolved, but no luck. My son who took over my iPhone XR, he has no problem play music through my car speakers with it. I went to Apple store for technical support today, the technician thought there might be a bug problem with the data, so she erased everything in my new iPhone, and restored back only my contacts, photos and basic personal info but it still didn’t work. I’m desperate for help, if anyone has same issues like mine. FYI, I have a Volvo XC 60 2010. Thank you.