Low connection speed, please explain.

So I've experiencing low internet connection issue all the time. Basically, the internet I have cannot support me work from home. 

I have "Fios Internet Speeds Up to 50 Mbps/50 Mbps", I have both non-5G and 5G wireless network at home.

When I am within 10 feet from my wireless router, using the only one online device to run speed test provided by google, here are the results.

This is for 5G:

This is for my non-5G:

So my question here is, where my 50/50 number I supposed to see for my wireless speed?

I am at Ellicott City, Shipley Grant neighborhood, 21043, in case the location matters.