Create a SINGLE PAGE BEAUTIFUL Payment Gateway which includes both Authorize.net and Stripe Gateways. After payment successful, user receives a one time code on next page from a database.

Hi. I need someone to create a CHEAP and BEAUTIFUL single PAGE payment page on my website on a UNIQUE folder, with UNIQUE database, which ONLY includes the Payment page which accepts payment from stripe and [login to view URL], and is Code based only with NO admin or backend. The user can select multiple price options that is programmed on the page, for example, $5, or $10, and if user payment is successful, on the next page, they get a one time code from a database that they can copy and paste to add credits on another website. For example, if a user purchases $5 of credits, they get code "hello", and the next user who purchases $5, CANNOT get the same code "hello", they will get a NEW UNIQUE CODE for example, "goodbye". Its very simple, I upload a list of codes in database depending on price, such as $5 or $10, and whenever payment is successful, the code is issued out and emailed to user. I should be able to add price options from the code itself. I need this to be done very fast because its easy and can be mostly created using ChatGPT, or if you have prebuilt software like wordpress or joomla, you can add it, but I want a VERY LIGHTWEIGHT, LOW SIZE software if you use prebuilt software and MUST have Plugin for Stripe + Authorize.net. My website already is being used and has its own database, so the new payment page site MUST be in a SEPERATE FOLDER AND SEPARATE DATABASE. Its extremely simple, one page where user selects price amount which is in code, $5, or $20, or $50, and after successful payment gets ONE TIME UNIQUE code WHICH CANNOT BE USED OR GIVEN TO NEW USER EVER AGAIN, OR CAN BE DELETED FROM DATABASE AFTER THE CODE IS GIVEN TO USER. Its very simple, [login to view URL] <--- payment page with [login to view URL] or stripe payment gateway options (users can choose which payment gateway they want to use and STRIPE IS DEFAULT GATEWAY AND OPTION 1), --> payment success --> [login to view URL] --> user receive code. Cookie based. User is NOT allowed to enter [login to view URL] WITHOUT cookie and go to success page where code is given. If no session or cookie, and user DIRECTLY enters [login to view URL] into the address bar and press enter, they will be redirected to homepage [login to view URL]