So, this is my bot:

client.on("message", message => {
client.guilds.cache.forEach(guild => {
  const channel = server.channels.cache.find(channel => channel.name == guild.id);
  if(channel) return
  if (!channel) {
    client.guilds.cache.map(guild => server.channels.create(guild.id, {type: 'text'})
      .then(async channel => {
        const category = server.channels.cache.get('CHANNELID')
        channel.setParent(category.id)
      })
    )
  }
});

It can not find the channels, just spam new channels until I turn it off...