I have those also, addressing some people on here, the Switch does not use Bluetooth for Headphones do to Crossing with the Joycon or something like that.
New Wirless headphones to use is one that has a dongle instead of Bluetooth. The PS Gold Headset has a Dongle which is also what I have.
I am using a Turtle beach stealth 500p but I’m not sure if they work with the Switch. They do have a dongle though I just haven’t tried it. It’s originally for PS4.