I'm making an beg command for my discord bot, but $inc isn't incrementing the value! I also have this issue for my warn command. I have to mention though that I'm not very experienced with mongodb

My code is:

const schema = require('../schemas/moneyschema')
 
module.exports.run = async(client, msg, args) => {
 
    const givers = [
        "Elon Musk",
        "Jeff Bezos",
        "Your Crush",
        "Mike Oxlong"
    ]
 
    const giver = givers[Math.floor(Math.random() * givers.length)]
    const givenMoney = Math.floor(Math.random() * 501)
 
    if (schema.findOne({ _id: msg.author.id })) {
        schema.updateOne({ $inc: { "money": givenMoney } })
        msg.reply(`${giver} gave you $${givenMoney}`)
    } else {
        let newData = new schema({
            _id: msg.author.id,
            money: givenMoney
        })
 
        newData.save()
        msg.reply(`${giver} gave you your first $${givenMoney}`)
    }
 
}
 
module.exports.help = {
    name: "beg",
    aliases: []
}

Is there anyone that is experienced with mongodb and knows how this works?