How to build a command block machine that only allows YOU to be in a certain cord

i have been trying this:

hopper clock on here and then comparator

testfor @a[Dr_Weasel99!=DR_WEASEL99,r=5]

then if player is found in my place again, a comparator

/tp @p[Dr_Weasel99=!Dr_Weasel99] ~ 20 ~

they should fall to their death no matter what because bedrock is replaced with water

but idk. im trying to make it when someone else comes in my place they will get teleported away

/kill @p[name=!DR_Weaasel99,x=(x-coord), y=(y-coord), z=(z-coord), r=(range)]

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