Any Lightroom subscription that you purchase from the App Store is managed by Apple through your iTunes account. You can cancel your subscription using the App Store app on your iOS devices.
Select your profile icon, and then select Subscriptions from your account menu.
Select your Adobe Lightroom subscription from the list.
Select Cancel Subscription and follow the prompts to confirm.
Any Lightroom subscription that you purchase from the Google Play Store is managed by Google. You can cancel your subscription using the Google Play Store app on your Android device. Visit the Cancel, pause, or change a subscription on Google Play guide for step-by-step instructions.