Add and improve functionality of my wix site

There are some functionalities that needs to added in my existing wix site, for eg. Search tab in home and product page, showing qty and product variant on shop product page and user can directly add to cart from here and stays on that page, auto scroll down on product page, current checkout and cart page is adi, I need razorpay integration so would need user to click checkout button enter shipping details or login if already logged in shipping details pops up and then razorpay service. I already have razorpay so even bypassing would do its just a button and link integration only thing needed here is passing the cart value to razorpay and then if order is done thankyou page (already there) for 15 second and then home page, orders database (already present) should be updated.