audio cards for pc desktop

Can anyone suggest an audio card for a pc desktop - windows 11 for zoom meetings from South America?  The sound is blurred, and very hard for me to understand what is being said by a speaker in South America.   I am currently using the audio from the motherboard, but perhaps there is something better that would make this a better experience.  I have a strong internet connection, so that does not seem to be the problem.  I need something that will give me more clarity.  Thanks for the help!