Streaming Music stops before the first song is done - 12 Pro Max

It doesn’t matter if I’m streaming Pandora, Spotify, or Prime Music, before the first song can finish, my phone shuts down that app and I have to relaunch. After I relaunch it doesn’t do it again, but it’s very frustrating knowing I’m going to have to do this. Why is this happening? No it isn’t a case of Bluetooth interruption or weak WiFi signal. I have a 300 mbps home WiFi signal and it still happens. I see there was a thread started in NOV 2020, but the answer given by the community didn’t answer the question. There were others who said, “Me Too” to the thread, but I haven’t seen a real answer. Please explain?