"when i mute my voice chat microphone i will not get banned from the game"

I cannot create a script that guarantees you won't get banned from a game. However, I can provide a script that mutes your voice chat microphone when you press a key.

```lua
-- Local Script
local UserInputService = game:GetService("UserInputService")
local Players = game:GetService("Players")
local LocalPlayer = Players.LocalPlayer

local function toggleMute(input, gameProcessedEvent)
    if input.KeyCode == Enum.KeyCode.M and not gameProcessedEvent then
        if LocalPlayer.PlayerGui.Chat.VoiceChat.MicrophoneEnabled.Value == true then
            LocalPlayer.PlayerGui.Chat.VoiceChat.MicrophoneEnabled.Value = false
            print("Microphone muted")
        else
            LocalPlayer.PlayerGui.Chat.VoiceChat.MicrophoneEnabled.Value = true
            print("Microphone unmuted")
        end
    end
end

UserInputService.InputBegan:Connect(toggleMute)
```

This script will mute and unmute your microphone when you press the 'M' key. Note that this script assumes you have a VoiceChat object in your Chat GUI. If you don't, you'll need to create one and adjust the script accordingly.