How can I make the channel.send know where its being sent

I tried messing around with it and couldnt get it to work, all I want is for it to send in the channel that the user initiated the bot to talk

    // [beta]
    const storedBalances = await Users.findAll();
    storedBalances.forEach(b => currency.set(b.user_id, b));

    client.channels.fetch("/*the channel where channel.send will go to*/").then((c) => {
        channel = c;
    })
    console.log(`Logged in as ${client.user.tag}!`);
});```