How Do I make sword kills work? [Please Need Help]

Ok, So When people kill someone they earn 1 kill

print("Leaderboard")

stands = {}


function onHumanoidDied(humanoid, player)
    local stats = player:findFirstChild("leaderstats")
    if stats ~= nil then
        local deaths = stats:findFirstChild("Wipeouts")
        deaths.Value = deaths.Value + 1



        local killer = getKillerOfHumanoidIfStillInGame(humanoid)

        handleKillCount(humanoid, player)
    end
end

function onPlayerRespawn(property, player)


    if property == "Character" and player.Character ~= nil then
        local humanoid = player.Character.Humanoid
            local p = player
            local h = humanoid
            humanoid.Died:connect(function() onHumanoidDied(h, p) end )
    end
end

function getKillerOfHumanoidIfStillInGame(humanoid)



    local tag = humanoid:findFirstChild("creator")


    if tag ~= nil then

        local killer = tag.Value
        if killer.Parent ~= nil then 
            return killer
        end
    end

    return nil
end

function handleKillCount(humanoid, player)
    local killer = getKillerOfHumanoidIfStillInGame(humanoid)
    if killer ~= nil then
        local stats = killer:findFirstChild("leaderstats")
        if stats ~= nil then
            local kills = stats:findFirstChild("KOs")
            local points = stats:findFirstChild("TechPoints")
            if killer ~= player and killer.TeamColor ~= player.TeamColor then
                kills.Value = kills.Value + 1
                points.Value = points.Value + 10
            else
                kills.Value = kills.Value - 1
                stats.TKs.Value =  stats.TKs.Value + 1  
            end
        end
    end
end


-----------------------------------------------

function onPlayerEntered(newPlayer)

    local stats = Instance.new("IntValue")
    stats.Name = "leaderstats"

    local kills = Instance.new("IntValue")
    kills.Name = "KOs"
    kills.Value = 0

    local deaths = Instance.new("IntValue")
    deaths.Name = "Wipeouts"
    deaths.Value = 0

    kills.Parent = stats
    deaths.Parent = stats

    while true do
        if newPlayer.Character ~= nil then break end
        wait(5)
    end

    local humanoid = newPlayer.Character.Humanoid

    humanoid.Died:connect(function() onHumanoidDied(humanoid, newPlayer) end )


    newPlayer.Changed:connect(function(property) onPlayerRespawn(property, newPlayer) end )


    stats.Parent = newPlayer

end

game.Players.ChildAdded:connect(onPlayerEntered)