5g now is already beam-formed, which means it’s a shaped em field and not omnidirectional, and yes, you’re correct that higher frequencies do more rapidly lose energy as they travel vs low frequency waves.
I don’t know the other things you asked exactly, but 5g towers are being built everywhere, and they’re very close together so you don’t lose 5g cell service. 5g has a much shorter range than an old school regular radio wave. Why radio towers are so damn tall vs something like your WiFi router or a 5g phased array, which a phased array is how 5g is able to beamform, is because the low frequency radio tower must have an extremely long transmitter wire or coil in order to properly resonate and charge the longer wavelength within the transmitter device, as such we do with transmission lines and sound tuning for subs, in order to efficiently reproduce the waveform in the air/fabric of space.
You are literally surrounded by digital radiation devices, so, how much damage could 60,000 5g or 6g satellites in low earth orbit do as far as cooking you, like Starlink (SKYNET) is trying to be?
How much is your 5g phone cooking your *** right now?