Step by step buying extension

[Nelwep]

Hello everyone,

I would like to edit my product page to make sure that the user goes through several steps before adding an article. I would like it to be similar to the product page of this site:

https://www.sodezign.com/fr/fauteuil-lounge-giratoire-pivotant-plat-gambler-design-kebe.html

Is there an extension that can do this easily or how can I do it? As I'm not very good at php, I'm a little scared to dive into the code but if I have no choice I'll get started. If this is the case, please tell me where I can find and edit the corresponding file.

Thanking you very much in advance and wishing you a pleasant evening