Chosen Solution

So after I remove the microphone from its adhesive to transfer onto a new screen, it is no longer sticky and it moves around. I was wondering what could I do to stop this.

Are you referring to the top microphone which is part of the front camera ribbon cable assembly? On some screens they may not come with the adhesive that the top microphone is supposed to align and sit on. Should have at least a black speaker filter at the top of the screen. If it does have the adhesive there is a plastic cover that you need to peel it off to use the adhesive.