Hi Tanvi,
I'm Sumit, here to assist with your question.
Apologies for any inconvenience - I'm happy to help you today.
When you say 'video calls,' are you referring to a Teams call?
Press Windows+R keys on the keyboard, or Right-click Start on the Taskbar and choose Run.
Type mmsys.cpl
Press Enter.
Go to the Playback tab > Right-click your Speaker > Choose Properties > Advanced Tab. Send me a screenshot of the same.
I look forward to your response and am eager to collaborate until we find a solution.