xxxxxxxxxx
client.channels.get("<ID of the channel you want to send to>").send("<your message content here>")
xxxxxxxxxx
//Discord.js v13
client.channels.cache.get(channelID).send({ content: "Mesage goes here" })
xxxxxxxxxx
const channel = client.channels.cache.get('id');
channel.send('content');
xxxxxxxxxx
const channel = client.channels.cache.get('Channel Id');
channel.send({ content: 'This is a message' });
xxxxxxxxxx
client.guilds.cache.get("<id>").send("<msg>"); // used for specific channel
xxxxxxxxxx
const channel = client.channels.cache.find(channel => channel.name === channelName)
channel.send(message)