@prami Well, I am not really sure what you are asking. This is not really the place to have this discussion and I don’t know if there is anywhere on this forum to do so. I wish there were because there are may folks over this 9 months who helped me that I would have loved a broader conversation.
As a general statement I could say that my website required 1000’s of lines of JavaScript front end and back end code which is custom designed for my particular web page design. So my code won’t help you or anyone else. However, there are many great Wix Velo programmers out there who can build custom pages for you in a lot less time it took me. Indeed I am certain they could have built mine far less time.
From my experience, I recommend that you need to know is exactly what you want the custom page to do, and have a design concept. From there you just roll up your sleeves and get busy. Also you should plan for may long hours and success will emerge from the ashes of failures.