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Huge page speed issue

Hello,

I have a huge issue about my page speed, especially on mobile.

During the google test speed, I have for example this link who takes more than 12 seconds on mobile but I really don’t know how to access and optimize it.
https://uploads-ssl.webflow.com/5ff783c3b3c88b2be94f05ee/js/webflow.22ae371c6.js

I am interested in all your advice to improve my speed page.

Thanks !

https://preview.webflow.com/preview/yacines-trendy-project?utm_medium=preview_link&utm_source=designer&utm_content=yacines-trendy-project&preview=9228c5acd4be3bd5e3e65213662636a0&pageId=600740c136dd6f4e36f2eda1&mode=preview