What is a good campground near Carmel or Monterey where I can get a reservation for July?

I’m looking for a campground not too far from Carmel or Monterrey. This would be for one night in mid-July. The ones near Big Sur look amazing but are almost all booked very far in advance. We will be en route to another location so don’t need the spot to be a destination in and of itself, but prefer something nice and quiet, not a spot in an RV park. Any recommendations appreciated!