It's not only the frequency which is about the energy of the photons usually expressed as eV, but the power level amplitude of the transmissions which the energy level of the wave expressed in watts (W) or decibels (dB) for RF transmissions. It can be the combined eV of the photons and their numbers and duration of exposure compared to the body's absorption rate that would be an issue... but in most things that surround you, that's very low on photon or combined energy levels, even if your exposure is high/constant.
First of all the wired headset to you PC wouldn't be doing much... RF radiation wise, likely more danger from the audio dB than the headset, same with the other components, even if you had a CRT monitor. If you were using WiFi on your rig, those power levels are still very low, usually 0.5W for a base station, and about half that for dedicated cards (~200mW) and less less again for intergrated (~50-100mW), also relatively recent upper limits for 5Ghz WiFi is 1W, while 4W remains for 2.4Ghz (was the old 802.11a limit too), but they are usually reserved for industrial applications, like the 7W upper cell limit.
There's other types & source of 'radiation' in your PC, like thermal IR radiation, light emission including UV from monitor or case lights... but again.... not at levels to be of concern.... except if the fan exhaust is right on your leg or more important 'parts'.
As for the RF/EMF side of things, home appliances, are pretty much very low power/wattage transmissions devices, and have used less and less power to transmit signals in the same frequency ranges as signal detection and processing have improved over the years.. Even cell phones that go much further than they used to on the same frequency have lowered power levels when going from analogue to digital from max of ~7W to below 3W and then again a bit when going from 2G to 3G, even when actively searching they use a lot less, and usually much less than that for normal use, and even less under low-power stand-by. Cordless phones are about 5-10% the power/wattage of cell phones (~100mW), and class 2 BT in most headphones is a similar fraction of that (~2-5mW), class 1 long-range BT is about the same as a cordless phone 50-100mW.
Had there been an issue with this, then problems would have shown up long ago, way before the move to Sub6 5G cellular that seems to be the focus (even though we haven't even started auctioning off the upper limit Sub6 spectrum yet, let alone use it, we're just at about 3.5Ghz). WiFi and others have been using upper 5Ghz spectrum for decades with 802.11a coming in the late 90s, all without an uptick in issues (in fact a lowering per capita) despite people's perceptions of an increase or increased threat.
There is an are to be wary, the reason standing next to microwave transmitters and cell towers is not good for you is the extremely higher energy output, and with sattelite it's higher energy and much high frequencies 30-300Ghz, but these are usually in spot far away from people and as energy decreases greatly over distance (inverse square law) it's not an issue unless you stand right next to one.
So hopefully that allays your fears, and helps you understand it well enouh to educate others. 🤠🤙
A good quick look at the myths & hype of this since 5G started people becoming irrational is covered and debunked at Android Authority;
https://www.androidauthority.com/5g-dangers-895776/