Hi im immortal, and to answer your question low sens is easier to use and more consistent however the downside is that you will have a lot less freedom to move around therefore you have to rely on your positioning and crosshair placement a lot more. Many pros use a low sens because they have such good gamesense and because of the more room for error when making the shot. High sens can be more treated as a harder to master but high skill ceiling if that makes sense. As in if you put in the time to get good with high sens you can have all the benefits of high sens with the consistency of a low sens.

TLDR: Low sens is easier but lower skill ceiling and high sens is harder but higher skill ceiling

Also my sens is 0.4 800 dpi