How do I use the "else" function in scripts?

To be more specific, in this script:

local part = script.Parent
local db = false
local myVar = game.Workspace.Part.SurfaceGui.Test

function FindHat(hit)
	local hat = hit.Parent:FindFirstChild("SilverthornAntlers")
	local human = hit.Parent:FindFirstChild("Humanoid")
	if human and hat then
		if not db then
			db = true
		
		myVar.Text = ("HOW DARE YOU WEAR THAT WRETCHED HAT!?")
		wait(4)
		myVar.Text = ("YOU WILL BE SMITED BY MY WRATH!")
		wait(4)
		myVar.Text = ("DIE!!")
	    wait(2)
		human.MaxHealth = 0
		wait(5)
		
		db = false
		
		
		
		end
	end	
end


part.Touched:connect(FindHat)

What I want is if someone is wearing something other than "Silverthornantlers" then it'll run another piece of code. So it's look something like this:

else
myVar.Text = ("You're good to go!")

Help would be greatly appreciated!

The Breakdown

There are two different types of else statements. elseif and else. Both being extremely useful when it comes to scripting.

ELSEIF

elseif is used for whenever you need to ask, "Well, if they don't have this, do they have this instead?" An example would be

local a = 5

if a == 6 then --If a = 6 then print A = 6!
	print("A = 6!")
elseif a == 5 then --If A does not = 6, but a = 5, then print A = 5!
	print("A = 5!")
end

The script above would make A equal 5, then ask, "Does A equal 6?", the if statement would return false, in other words, A does not equal 6. With the elseif added it asks another question, "Does a = 5?" The elseif statement would be true, resulting in a print of A = 5! You can have as many elseifs as you want in an if statement.

ELSE

When using an else, it will go ahead and ask the if statement, "Is what you're asking true?" If the if statement returns false, then the code underneath the line of else will run until it hits an end. You can only have one else in an if statement.

An example script would be:

local a = 5
if a == 6 then --If a  = 6 then print, A = 6!
	print('A = 6!')
else --If a does not equal 6, then print, A does not equal 6.
	print('A does not equal 6!')
end

Your script would be:

local part = script.Parent
local db = true
local myVar = game.Workspace.Part.SurfaceGui.Test

part.Touched:connect(function(hit)
    local hat = hit.Parent:FindFirstChild("SilverthornAntlers")
    local human = hit.Parent:FindFirstChild("Humanoid")
    if human and hat then
        if  db = true then 
            db = false
     		myVar.Text = ("HOW DARE YOU WEAR THAT WRETCHED HAT!?")
      		wait(4)
       		myVar.Text = ("YOU WILL BE SMITED BY MY WRATH!")
       		wait(4)
       		myVar.Text = ("DIE!!")
       		wait(2)
        	human:TakeDamage(human.MaxHealth)
      		wait(5)
	 	db = true
	elseif db = false
		myVar.Text = "You're good to go!"
		db = true
        end
    end 
end

If you did not understand this, then please leave a comment! If you did, then please accept my answer! =)

if human and hat then
--Murder
elseif human then
myVar.Text = "You are good to go."
elseif hat then
print("Non-human hat detected.")
else
error("This cannot be reached")
end

Also: It isn't a function, it is a statement.

local part = script.Parent
local db = false
local myVar = game.Workspace.Part.SurfaceGui.Test

function FindHat(hit)
	local hat = hit.Parent:FindFirstChild("SilverthornAntlers")
	local human = hit.Parent:FindFirstChild("Humanoid")
	if human and hat then
		if not db then
			db = true
		
		myVar.Text = ("HOW DARE YOU WEAR THAT WRETCHED HAT!?")
		wait(4)
		myVar.Text = ("YOU WILL BE SMITED BY MY WRATH!")
		wait(4)
		myVar.Text = ("DIE!!")
	    wait(2)
		human.MaxHealth = 0
		wait(5)
		myVar.Text = ("  ")
		db = false
		
elseif human then
myVar.Text = ("You're good to go!")
elseif hat then
print("Nub")
else
error("This can't")
db = false
		end
	end	
end


part.Touched:connect(FindHat)