for _,v In pairs.... What am i doing wrong? Can someone explain it?

So, i wanted a script that removes all targets and replaces them with a :Clone()

This is my script

wait()
local NewScript = script.LightScriptV2
wait()

for _,v in pairs(workspace:GetChildren()) do
wait()
	if v:findFirstChild("LightScript") then
NewScript:Clone()
NewScript.Parent = v.Parent
print(NewScript.Parent)
v:Destrioy()
print("Changed. "..v.Name)
	else
 	print("Not changed "..v.Name)
	end
end

It keeps printing the print("Not changed "..v.Name) line, instead of replacing.

The object he needs to find are in different models in Workspace.

Can someone explain me what i'm doing wrong?

EDIT: I CHANGED THE SCRIPT AS RECOMMEND BELOW.

But still, it doesn't do anything...

(the new script recommended by users in comments)
wait()
local NewScript = script.LightScriptV2
wait()

for _,v in pairs(workspace:GetChildren()) do
wait()
if v:FindFirstChild("LightScript") then
NewScript:Clone().Parent = v
v:Destroy()
print("Changed. "..v.Name)
	else
 	
	end
end

On line 11, you have v:Destrioy(), For 1. Make sure it's v:Destroy() Other than that I can't see anything wrong, other than maybe line 7 where the first f in FindFirstChild is lower case.. I've been told that it matters, and also been told it doesn't matter, so IDK.

well, its gonna parent new script to workspace because of the following line of code NewScript.Parent = v.Parent also the following part of code could be problematic (but i am not 100% certain)

NewScript:Clone()
NewScript.Parent = v.Parent

I'd recommend changing it to

NewScript:Clone().Parent = v

so the main error in your code is that all of the new scripts will be parented to workspace because of the following line of code NewScript.Parent = v.Parent keep in mind that your looping through workspace, therefore, if you do v.Parent then your referring to workspace

also by doing v:Destroy() your destroying everything in workspace since your looping through workspace, it should be v.LightScript:Destroy()

here is the modified code:

wait()
local NewScript = script.LightScriptV2
wait()

for _,item in pairs(workspace:GetChildren()) do
	if item:FindFirstChild("LightScript") then
		item.LightScript:Destroy()
		NewScript:Clone().Parent = item
	end
end