I am sory for not living in a giant home without any 2.4ghz neighbors around me.

Also I myself use 2.4ghz for low bandwidth devices, and other connected devices which don't have 5ghz. And there are also the neighbors who cast their 2.4ghz network they may use how they will around me.

But I didn't have many issues on most of the headsets I tried. At least higher end.

There were still some outliers and with bad unreliable connections, even on high latency (jbl tour one m2 for example).

Others like corsair headsets had issues at "high" range (like 10-15m through walls), but no issues at close range, but that is expected from their specs.

We have both at home, but at school im stuck on 2.4

Pretty much all routers ISP give are 2.4 included so whether you want it or not you are surrounded by emissions at that frequency.

Most IoT devices still need it, and it's actually recommended for those for its better wall/floor penetrating ability, since a light bulb isn't going to need tons of bandwidth.