Setting Board Permissions for Managers and Sales Team

I have a board with three types of users:

Super Admin (Me) – Full control over everything.
Managers – Can view and edit all items’ content but cannot modify the board structure (columns, automations, permissions, etc.).
Sales Team – Can only view and edit items assigned to them.
The issue is that Monday.com seems to only differentiate between Admins and Members, which does not allow for this level of permission control.

I need a detailed, thorough solution that ensures:

Managers can edit all items but not change board structure.
Sales Team can only edit their assigned items.
Is there a way to achieve this setup in Monday.com? If not, this limitation might force me to reconsider using this CRM.

Could you provide a precise solution that fully addresses my request?