How do i cancel the subscription to Guided Meditation and Sleep?

Follow the steps here: link-> How to cancel a subscription from Apple - Apple Support

If the subscription does not have a Cancel button, and has an "Expires" date, then its not set to renew, so there's nothing to cancel.

These support pages provide comprehensive information about how to manage your subscriptions - both from your devices, or from your AppleID account:

Subscriptions and Billing - Official Apple Support

How to cancel a subscription from Apple – Apple Support

If the subscription that you want to cancel is not listed – Apple Support