Bluetooth headphones not working with a USB microphone at FL Studio on MacBook

(I'm sorry if my text has mistakes, I've used a translator to write it in english)

I can't get the bluetooth headphones to work with a USB microphone at FL Studio on Macbook. I know that for FL to work both headphones and a microphone - you need to create an aggregate device in the MIDI settings by adding headphones to the output and microphone to the input. But the problem is that the headphones have a 44.1k discrete rate and a microphone has 48k. If you add them this way to the aggregate device and then select it in Fl Studio, a CoreAudio error comes out and nothing works. If you raise the frequency to 48k on the headphones to make it the same with the microphone, the error disappears, but the sound from the headphones becomes intermittent, as if constantly "jumping" from one part of the music played to another. Then, I wanted to lower the microphone frequency to the frequency of the headphones (44.1k), but the frequency change button in the microphone settings is inactive, so it is impossible to do so. The question is, how do you make the headphones and microphone work properly at FL Studio?

[Re-Titled by Moderator]