How to delete this App

Such a rip off. All the better stickers are paid!!! Why! 🥵🤬🤯🤮

I downloaded the app just for today!! I love the stickers but i also love for the ones you have to PAY FOR!!!! LIKE WHY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! And now im deleting it and i dont know how to so SOMEONE HELP ME DELETE IT!!