ldap filter

Hello, I connected my LDAP Windows with Proxmox but I want to filter group to retrieve all groups in the "XX" OU at the root of my domain. I can't do it, I've tried a lot of filters, does anyone have a solution please?

Ive never really done much with LDAP filters before, and I am struggling to create one for my setup. The groups is another issue but right now I am just trying to make one for users. Here is what I have tried already. I have tried memberOf=CN=pve_admins,OU=users,DC=ad,DC=test,DC=com...