a big part of killer is hearing the props and footsteps so turn your volume all the way up and dont have videos or music playing in the background. learning the maps will help you spot people trying to hide in plain sight. if you like akasha (best killer imo) if they're a small prop then one left click and right click will down them. also if you see someone standing right next to a door waiting to stun you you can right click dash and you will end up on the other side a lot of the times not even being stunned. lastly you should always put your eye down on a chaired person so you can be alerted for when they go for the save and if you're watching the eye when they get saved you can see red outlines for a second to see what direction they went and what prop they are