itch.io

I own this package and can't see a tombstone in there -- but there's enough other similar items and you have the colour palette that you could make one without too much trouble. A graveyard would fit this aesthetic well!

FYI - the first line of your free licence section states: "By using the free license you are allowed to use this pack on any commercial and non-commercial project you desire." and then goes on to say "You cannot use the assets on any commercial project"

How much do you pay for a coffee? You know things like this take time and effort to create right? Boooo people trying to get paid for their work - just because "most games like this" are free doesn't mean they should be.