Exclude subdomain and subdomain folder from cache

Hello, thank you for your very good plugin.
I want to exclude my subdomain and subdomain folder in public_html from the cache.
Everything I did didn’t work.
I tried with the whole folder name or subdomain, but I didn’t succeed.

When I empty the cache
In the first visit of the subdomain, everything is correct, but when I click on the main domain, it shows the subdomain.
If I open the main domain on the first visit after emptying the cache, if I open the subdomain it shows the main domain.

Thank you for your time.