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