This simple bot can track specific voice channels you make. And if a user joins it, it will create a channel named "user's channel". And it will automatically remove the user's channel if empty. To set up the bot, use "/admin create_channels add" to add a voice channel.
There is also a public instance of this bot available with the following invite url: https://discord.com/oauth2/authorize?client_id=1539345834422837348&scope=bot%20applications.commands&permissions=19472
If you need further assistance with the bot. You can ask it here: https://discord.com/invite/redseccentral