Magento 2.4.3 Same Site Cookie None Issue

I am developing third party payment gateway plugin for Magento version 2.4.3 and using PHP version 7.4 with NGINX server. Now I am facing problem after redirecting back from the payment gateway to Magento website.

Due to Same Site cookies issue my session getting lost after returning to the website.

I want to set Same Site Cookie value as None for all requests and for this I have tried all steps as mentioned in the below post.

https://hardikparikh94.medium.com/fixing-magento2-samesite-cookie-issue-8b687908a9e0

I have tried everything as mentioned in the above blog but still Same Site cookie issue is not getting resolved.