Cart count is not updating properly

Hey, I have been facing an issue on my site that when we add any product to cart the cart count on nav bar not updating. The products will be added to the cart but the count is not updating. (I have attached a vimeo video link)

Also ajax add to cart is not working as well.

I cleared cache, change the browser but nothing is being working so far. I'm kinda new to wordpress so really seeking expert help on this. Lemme know if you need anything else as input to give me a solution.

https://vimeo.com/1002655547?share=copy

Btw the count is updating on wordpress customise view. But it is not working on live version. I will attach another screen recording below.

https://vimeo.com/1002658791?share=copy

Given below are the plugins that I'm been using.

https://vimeo.com/1002659995?share=copy