I have foraminal stenosis and severe bilateral nerve root compression at l5 from grade 2 spondylolisthesis. recently ive developed buzzing/vibration feelings in my calves, ankles, and feet. could these weird sensations be from nerve compression?

Yes these symptoms are consistent with your description. You are also very young to have developed such a condition. Has ia cause ever been given? Sometimes a limb length difference or a pelvic rotation can present such a condition. Which is treated by a podiatrist with biomechanics provide custom orthotics to provide better function and less pathology.

I too would agree that what is occurring might well be all due to the low back pathology. An EMG/ NCS could elucidate specific nerve root involvement which might lead to management intervention. Also, you might consider testing for ankylosing spondylitis if not previously done.