Worrisome oxygen saturation readings

Hi, I’m a healthy 26 year old male. I bought a pulse oximeter during COVID to have on hand in case someone in my household got sick. Thankfully we are all virus-free and healthy. Out of curiosity I test it out on occasion, and generally my levels hover around 96-98, which I believe is a normal range.

For some reason, when I was wearing it earlier, my levels were hovering around 95/96 and then dropped to 93 for a few seconds, before rebounding back to 96 again. Isn’t this incredibly low? I’m worried that a 93% reading indicates I somehow wasn’t getting enough oxygen for that brief period of time. Would a brief drop to 93% indicate I was deprived of oxygen to any extent, or enough to cause any sort of damage? Or is this really nothing to worry about.

Thanks all!

Oxygen is important for breathing and heart rate.