Cannot play Apple Music on iPhone 18Pro using cellular data

I purchased a new iPhone (18Pro) and transferred everything from my old phone. Now, for some unknown reason, I can't play music unless I've had it downloaded via Apple Music if I'm on cellular. I get a message saying I have no internet connection, and yet I do. I have cellular switch on in Music (I double checked) and I'm flummoxed. I used to be able to select a music or one of Apple's compilations no problem with my old phone. Or I'd ask Siri to play some music I'd like and I'd hear something. With this last bit I see the phone try to connect and eventually it just plays me some of my downloaded music because it can't connect. I'm sure this is not written clearly, but I'm hoping someone out there can help me! I do want to be able to connect while I'm on my walks. Below is a screen shot of what I see when I try to play music: