Admimnin commands

plr = game.Players.LocalPlayer
char = plr.Character
commands = {"kill", "speed", "ff", "god", "destroy", "tp", "hp", "loopkill"}

plr.Chatted:connect(function(msg)
    if msg:sub(0, #commands[1]) == commands[1] then
        local var1 = msg:sub(msg:find(" ")+1, 10000)
        for i,v in pairs(workspace:GetChildren()) do
            if v.Name:lower():find(var1:lower()) and v:FindFirstChild("Humanoid") then
                v.Humanoid.Health = -10
            end
        end
    elseif msg:sub(0, #commands[2]) == commands[2] then
        local var1 = msg:sub(msg:find(" ")+1, msg:find(" ", msg:find(" ")))
        local var2 = msg:sub(msg:find(" ", msg:find(" ")+1)+1, 2000)
        for i,v in pairs(workspace:GetChildren()) do
            if v.Name:lower():find(var1:lower()) and v:FindFirstChild("Humanoid") then
                v.Humanoid.WalkSpeed = tonumber(var2)
            end
        end
    elseif msg:sub(0, #commands[5]) == commands[5] then
        local var1 = msg:sub(msg:find(" ")+1, 10000)
        if var1:lower() == "all" then
        for i,v in pairs(workspace:GetChildren()) do
            if v:FindFirstChild("Humanoid") then
                v:Destroy()
            end
        end
        elseif var1:lower() == "others" then
        for i,v in pairs(workspace:GetChildren()) do
            if v.Name ~= char.Name and v:FindFirstChild("Humanoid") then
                v:Destroy()
            end
        end
        else
        for i,v in pairs(workspace:GetChildren()) do
            if v.Name:lower():find(var1:lower()) and v:FindFirstChild("Humanoid") then
                v:Destroy()
            end
        end
        end
    elseif msg:sub(0, #commands[6]) == commands[6] then
        local var1 = msg:sub(msg:find(" ")+1, msg:find(" ", msg:find(" ")))
        local var2 = msg:sub(msg:find(" ", msg:find(" ")+1)+1, 2000)
        for i,v in pairs(workspace:GetChildren()) do
            if v.Name:sub(0, #var1):lower() == var1:lower() and v:FindFirstChild("Humanoid") then
                for i,x in pairs(workspace:GetChildren()) do
                    if v.Name:sub(0, #var2):lower() == var2:lower() and x:FindFirstChild("Humanoid") then
                        print("OK???")
                        v.HumanoidRootPart.CFrame = x.HumanoidRootPart.CFrame
                    end
                end
            end
        end
    elseif msg:sub(0, #commands[7]) == commands[7] then
        local var1 = msg:sub(msg:find(" ")+1, msg:find(" ", msg:find(" ")))
        local var2 = msg:sub(msg:find(" ", msg:find(" ")+1)+1, 2000)
        for i,v in pairs(workspace:GetChildren()) do
            if v.Name:lower():find(var1:lower()) and v:FindFirstChild("Humanoid") then
                v.Humanoid.MaxHealth = var2
            end
        end
    elseif msg:sub(0, #commands[8]) == commands[8] then
        local var1 = msg:sub(msg:find(" ")+1, 10000)
        for i,v in pairs(workspace:GetChildren()) do
            if v.Name:lower():find(var1:lower()) and v:FindFirstChild("Humanoid") then
                while wait(5) do
                    v.Humanoid.Health = -10
                end
            end
        end
    end
end)