Horrible signal to noise ratio

Attempted to move my router all around my apartment and unfortunately the speed got progressively worse as I tried. So I put it back to where it was before and unfortunately now the speed is much slower than it was before I moved it!

My signal to noise ratio on my primary signal is 0 dB!  Obviously you can't get any worse than 0 db for signal to noise ratio! I also noticed that my band on my primary signal has now changed to be B66, where this afternoon it was B2. I don't know if that change was what made things worse.

You had mentioned that I'm very close to the 5G. How were you able to determine that and is there anything I can do on my end besides moving my router? Does the secondary single even matter? The reason I'm asking is it seems I'm not even using the secondary signal despite it being there so is everything relying on the primary signal? It sure seems that way because I get the feeling the secondary single is not even being used. I wish there was someway I could get them to have the point at the secondary signal and make that the primary one.