If I subscribed to apple one do I need to cancel the individual subscriptions?

See the following from Bundle Apple subscriptions with Apple One - Apple Support

If you already subscribe to Apple Music, Apple News+, Apple Arcade, or Apple TV+, you don't need to cancel those subscriptions. They will automatically be canceled when you're billed for Apple One.

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Do you already have an iCloud+ plan? Learn what happens to your iCloud+ plan when you join Apple One.