it could be a movement thing it could be like a lack of mouse control which could be sensitivity related there are quake players who hit decent lg with this kind of sens but i think in ur case ur sens is uncontrollable for you in the sense that you make silly unecessary movement shakey 360s by accident bullshit
i think u have a high sens like this in response to your high ping or something maybe it helps overcompensate rockets dor that, thats what i always assumed, but aim wise this isnt gonna help u with any kind of movement and the sharp fast stutter steps are just gonna reveal this the most
tldr u dont need a low sens u just need a sens u are genuinely comfortable with and i dont think u arw with what u have been using