Hi Naincy,
Glad to assist you Naincy. The information seems like you need your admin to involve this if we understand by no mistakes. Miss, if you don't have a language setting option. In some Microsoft 365 installations, display language and some other settings can only be changed by IT admins, as shown below. If you can't change your display language, ask your organization's Microsoft 365 administrator for help.
So we would recommend you to kindly contact you admin if he/she could assist you changing the language.
Kind Regards,
George