Hello @Sam Abdul Rehman
As you have mentioned that all Systems are controlled by your administration ( IT Admin ).
Hence in your case you should be a normal user for this PCs and only your IT Admin can restrict the login to your favorite computer.
However if you get Admin rights by any chance then you can restrict using Group polices.
GPO > Windows settings > security settings> local policies > User rights assignment > Allow log on.. ( Select User Name )
Reference : https://learn.microsoft.com/en-us/troubleshoot/windows-server/identity/restrict-use-one-domain-user-only
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