Why does this happen?

So I've made a custom player list with fancy buttons. Well, apparently somewhere I've made it multiply with each click of different players.. For example:

Output After clicking any activity button:

[CLIENT] Player1 sent friend request to Player2
[CLIENT] Player1 sent friend request to Player2
[CLIENT] Player1 sent friend request to Player2
[CLIENT] Player1 sent friend request to Player2
[CLIENT] Player1 sent friend request to Player2
[CLIENT] Player1 sent friend request to Player2
[CLIENT] Player1 sent friend request to Player2
[CLIENT] Player1 sent friend request to Player2
[CLIENT] Player1 sent friend request to Player2
[CLIENT] Player1 false
[CLIENT] Player1 false
[CLIENT] Player1 false
[CLIENT] Player1 false
[CLIENT] Player1 false
[CLIENT] Player1 false
[CLIENT] Player1 false
[CLIENT] Player1 false
[CLIENT] Player1 false

What did I do wrong?

local list = script.Parent.list
local bg = script.Parent

local player = game.Players.LocalPlayer

local addFriend, removeFriend = game.ReplicatedStorage.CrossConnections.Friends.AddFriend, game.ReplicatedStorage.CrossConnections.Friends.RemoveFriend
local isFriend = game.ReplicatedStorage.CrossConnections.Friends.GetIsFriend

local playerSlot = script.PlayerSlot

local function update()
	list:ClearAllChildren()
	local numPlayers = #game.Players:GetChildren()
	
	bg.Size = UDim2.new(0.2,0,0.1,(numPlayers*30)-30)
	
	for i, v in pairs(game.Players:GetChildren()) do
		local newSlot = playerSlot:Clone()
		newSlot.Text = v.Name
		newSlot.Position = UDim2.new(0,0,0,30*(i-1))
		newSlot.Parent = list
		
		local slotDebounce = 0
		
		newSlot.MouseButton1Click:connect(function()
			if slotDebounce == 0 then
				slotDebounce = 1
				for i, v in pairs(list:GetChildren()) do
					v:FindFirstChild("ActivityList").Visible = false
				end
				
				if newSlot.Text ~= player.Name then
					newSlot:FindFirstChild("ActivityList").Visible = true
				end
				
				local activityList = newSlot:FindFirstChild("ActivityList")
				local toggle, tele, repo = activityList.ToggleFriend, activityList.Teleport, activityList.Report
				
				local friend = isFriend:InvokeServer(newSlot.Text)
				_G.output(player.Name, friend)
				
				if friend then
					toggle.Text = "Remove Friend"
				else
					toggle.Text = "Add Friend"
				end
				
				local activityDebounce = 0
				
				toggle.MouseButton1Click:connect(function()
					if activityDebounce == 0 then
						activityDebounce = 1
						if toggle.Text == "Add Friend" then
							_G.output(player.Name, "sent friend request to", newSlot.Text)
							addFriend:InvokeServer(newSlot.Text)
						else
							_G.output(player.Name, "is no longer friends with", newSlot.Text)
							removeFriend:InvokeServer(newSlot.Text)
						end
						
						local friend = isFriend:InvokeServer(newSlot.Text)
						_G.output(player.Name, friend)
						
						if friend then
							toggle.Text = "Remove Friend"
						else
							toggle.Text = "Add Friend"
						end
						activityDebounce = 0
					end
				end)
				
				tele.MouseButton1Click:connect(function()
					if activityDebounce == 0 then
						activityDebounce = 1
						--do fancy stuffs
						activityDebounce = 0
					end
				end)
				
				repo.MouseButton1Click:connect(function()
					if activityDebounce == 0 then
						activityDebounce = 1
						--do fancy stuffs
						activityDebounce = 0
					end
				end)
				slotDebounce = 0
			end
		end)
	end
end

update()

local lastCheckedNumPlayers

while wait(1) do
	if lastCheckedNumPlayers ~= #game.Players:GetChildren() then
		update()
		lastCheckedNumPlayers = #game.Players:GetChildren()
	end
end