Hello @Bader121, you cancel the renewal by cancelling your subscription. Since it is already paid, you will be able to keep it but it won't renew for the next period.
To cancel your subscription, you have to go to a platform you are subscribed on
App Store – https://support.apple.com/en-us/HT202039
Google Play – https://support.google.com/googleplay/answer/7018481?co=GENIE.Platform%3DAndroid&hl=en
Desktop version (FastSpring) – https://windy.onfastspring.com/account (type in your email address you used for subscription)