So I'm assuming this one? https://www.newfrog.com/product/usb-c-type-c-to-hdmi-hdtv-adapter-cable-for-nintendo-switch-game-console-196840 How long have you been using it as I've heard bad things about using these type of adapters on the Switch.
I have them both and recommend the Mayflash because you can change the controls and the right analog control feels more accurate compared to the 8bitdo.