Hi @Changal Rayudu ,
In sharepoint, permissions are inherited upwards (if inheritance is not broken, the library inherits the site's permissions).
You can stop document library permission inheritance by setting unique permissions for a limited number of users or a group, Implemented to hide document library tags from certain users.
Here are steps:
1.Break permission inheritance in SharePoint Library
Select Settings, then Library settings
To break permissions inheritance from the parent, select Stop Inheriting Permissions.
2.Assign unique permissions in SharePoint Library(Grant permission or remove user permission).
More detailed step-by-step information, you can refer to this article:https://support.microsoft.com/en-us/office/customize-permissions-for-a-sharepoint-list-or-library-02d770f3-59eb-4910-a608-5f84cc297782
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