I have an issue that I believe has to do with wifi handoffs within my own home. Present...

I have an issue that I believe has to do with wifi handoffs within my own home. Presently, I have a wireless network, actually two networks, one for the two.four band and one for the Five G band. I also have a wireless extender, which basically adds two more networks to my system. The issue is that if I leave my phone in the charging cradle, it usually connects to the FiveG extended network, since the signal is strongest there. But, when I move around the house, I lose reception, calls drop, or I can't make calls. It doesn't want to automatically switch to the most powerful wifi network. Is there a way to force the phone to one particular wifi network or have it handoff when I change rooms? I went into the Republic app., - Settings - Advanced Settings - Enable Handover on networks - ..... There is a list of every network I have ever been near, and all are checked except the one's that are in my home. Do you have any info that will help me with this? Thx, Frank