when I gtry to purchase music , my phone or imac takes me right to purchasing an apple music subscription.

See the 'How to buy music from the iTunes Store in the Apple Music app on your Mac' section in:

Buy music from the iTunes Store on your Mac - Apple Support

Apple wants to recharge for music. Its my understanding that tge company bought the rights to the songs so they cab do this. Apparently, they dont vare that you, me and millions of people already paid for songs in the past and had many in their song library.

perhaps Apple will stop trying tonrecharge for the old songs and just vharge for new ones.