Why do we need to buy more storage and pay for Apple Music and Apple TV I need help understanding especially since we spend minimum 1000 on the phone

You don’t need to buy more storage (assuming you mean iCloud) or pay for Apple Music or AppleTV+. These are options but not a requirement. It’s no different than anything else…you want the extras you have to pay for them. You paid +/-$1000 for the device. You didn’t pay for the additional services Apple sells. You receive 5GB of iCloud storage for free. If you need more you have to choose a subscription plan and pay for it. Pretty much like any other cloud storage service out there. You may receive a low amount for free but anything higher has a price. Apple Music is a premium streaming service and like all of the others you have to pay to use it. AppleTV+….same thing. Premium tv streaming service.