@Soap141 It’s not complicated at all. You go unsubscribe the same way you subscribed.
If on Desktop, you go to https://account.brave.com/ and sign in, which is done via them sending you an email instead of you using a username + password. Then you go to where it shows your subscriptions and you cancel.
If you did it through Google or Apple’s app stores, then you open those app stores and go to Subscriptions and you cancel it.