Hi @Viddy9 ,

To remove disabled users from people search results, please refer to the following steps:

1.Go to Central Administration -> Manage service application -> User Profile Service Application -> Manage User Profiles:

2.Type account names of the disabled users in find profiles text box to find -> Delete:

3.Go to Configure Synchronization Connection -> Edit Synchronization Connection -> Check “Filer out disabled users”:

4.Go to Central Administration -> Manage service application -> Search Service Application -> Content Sources -> Start Full Crawl:

The disabled users will be removed from people search results successfully after completing the full crawl.

I hope this information has been useful, please let me know if you still need assistance.

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@Viddy9 .

Here is an article about how to get list of disabled users for your reference:
Find disabled Active Directory User accounts

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