For example in Apex legends you might use a mouse sensitivity of 5 and hit every shot.
and fill in the blanks.
After inputting my DPI and current mouse settings from Apex it tells me to set my mouse sensitivity to
23.33 in Call Of Duty : Modern Warfare.This is the best thing to do if you switch between games a lot. The last thing you want to do is get used to a setting in one game and then go back to the other and you can't hit the broad side of a barn.
Let me know if this helped you aim a little better!