ok here are some tips one have you tried the recording in the closet or under some blankets trick and also id recommend using hitfilm its free and with its frame level detail timeline it makes lip skink as easy as matching files with wave levels and if your pc is not powerful enough i think blender has a video editor but i just started learning that so i don't know if you can see audio and visuals at the same time but i know it has frame level detail other than that i look forward to seeing ya improve your art