import this

import { ToastContainer ,toast } from "react-toastify";
import "react-toastify/dist/ReactToastify.css";


const handleResetPassword = async () => { const email = emailRef.current.value;
    if (email) {
        await sendPasswordResetEmail(email);`enter code here`
        toast('Please!! Check Your Email');
    }
    else{
        toast('Please!! provide your email address');
    }
}

call component inside return method

<ToastContainer />