Issue in recording guitar using microphone

Hi guys! I’m new to audacity, can you help me with my issue? When recording acoustic guitar using microphone, it seems that the sounds are cut-off and the sound waves are unevem. Only the down and up strum are recorded. Very much appreciated!

Make sure [u]Windows “enhancements”[/u] are turned off.

Ensure that all effects are turned off in the Windows Sound settings. See: Why do my recordings fade out or sound as if they were made in a tunnel?