How to check if object is exist then update otherwise push a new object in to that using mongoose and node js express

Question

Data added else is running perfectly I want my if statement solution.

const user = await Data.findOne({ email: req.body.email }).select("email").lean();

//  here i want to update 
if (user) {
    console.log("data updated");
}
else {
    const dataa = new Data(req.body)
    let savedData = await dataa.save().then((resp) => console.log(resp))

    console.log(savedData, "after save");
}