i need to edit object string in array using mongoose and discord.js

I have an array of Users, to which I add an object every time I use a command:

Id: member.id,
Rank: rank,
Deposit: 0,
Joined: Date.now(),

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guildDb.findOne({ GuildId: guild.id, GuildOwner: status.ownerId }, async (err, docs) => {
   if (err) throw err
   if (!docs) return

   docs.Users.find(x => x.id === user.id).Deposit += +500
   await docs.save().catch(error => console.log(error)
})

It does not change the deposit value and does not even display any error. help?)