Anybody got any suggestions to point in the right directions please…?

Hi guys, just out of curiosity is there a way to cut or reduce speaker sound when waking and speaking to alexa?.. I have searched on here and GitHub but I can’t find any relevant information… Example I am watching a youtube video and when I say alexa the mic cant define what I am saying properly as its picking up audio from the video unless I get really close to mic within a foot or so depending on music video… I have tried reposition the mic and speakers but as they are within half a metre the audio from the video cancels my voice out, can’t seem to fathom this one out… any help would be greatly appreciated. Thanks in advance…