Mount qcow2 to Ubuntu host:
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Temporally create qemu-nbd mount points by:
sudo modprobe nbd

sudo qemu-nbd  -c /dev/nbd0 -f qcow2 "My drive.qcow2"
sudo qemu-nbd -d /dev/nbd0
*Also eject the partition to fully remove.

To unmount nbd driver from system:
Option 1: Run #sudo modprobe -r nbd
Option 2: Reboot host to clear all /dev/nbdX drives.

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Sources:
https://askubuntu.com/questions/4396/how-do-i-mount-a-qcow2-disk-image
https://www.qemu.org/docs/master/tools/qemu-nbd.html
https://phoenixnap.com/kb/modprobe-command

Date: March 30th 2024
Update (July 23rd, 2024): (Figured out how to un-mount nbd driver).