I'm still trying to wrap my head around the thermometer shortage - did people not have thermometers at all before this? Or is there some reason to hoard them? It's not like these things are consumable or break easily.
You might be able to find some on Amazon that are... marketed somewhat specifically but still work well for general purposes:
https://www.amazon.com/Digital-Basal-Body-Thermometer-Temperature/dp/B07ZRL44D1I think it is just a supply side problem. Since the items are not consumable, not many were probably manufactured. also, I can see where some people may not have a working thermometer at home since they have been healthy and have no children. I already have a digital thermometer, but it is over a decade old and I wanted to update to one that you can put in your ear and get a reading a few seconds rather than a few minutes. I'll just wait. It is not urgent for me.