How to do Razorpay Payment with Razorpay URL

I am integrating a Razorpay payment gateway. But they only provide a razorpay URL which is redirecting me to the razorpay payment gateway page. Here is no backend and frontend code for the payment gateway. There is only a URL that is redirecting to another page. Now how do I get the data after payment is a success or failure? Can anyone please help me regarding this Razorpay payment gateway? Sorry for my bad English.