Don't get me wrong, my dragons squarely fall into the player races, and definitely don't pose the same threat as real monsters.
You see, using Lobotomy Corporation as an inspiration, I created several monsters which should be more than enough for my world.
However, Lobotomy monsters are extremely destructive and don't even try pretending to be natural. Some also have extremely handy AoE attacks and the ability to come back to life no matter what.
In contrast, adult dragons are around the size of a larger draft horse and their natural weapons are physically incapable of killing many people quickly, and their breath weapons have a shot limit and can't reach farther than 20 meters. They don't even eat humans, most of their diet consists of fish, fruits, algae, and occasionally deer and boars.
Their ability to fly does make them able to traverse large distances relatively quickly, but not as useful in combat without a grenade launcher strapped to your back.
Sure, a Foundation dragon, equipped with an automatic grenade launcher, IS terrifying, but that's because of the Foundation (and also the now all-seeing and all-reaching grenade launcher). You should have seen when Captain McKenna hijacked an Irkalla-class air fortress and flew above a city with it while playing Ready to Die over the PA system. No international incident was ever that cool and terrifying!
Yeah, using the Foundation is cheating and not even the flashiest one at that.
So, let's suppose that there is a vengeful dragon that is really angry at humanity and she wants to cause as much damage to them as possible. To be more exact, she wants to force them out of her territory.
Both sides have access to modern technology. Humans are more numerous and dragons have a longer lifespan (more knowledge, experience, and time to wait) and can stay off the grid more or less indefinitely. Dragons can also precisely manipulate objects through weak telekinesis, it lacks the power to be effectively used in combat, but lets dragons perform tasks that require hands and an opposable thumb.
Despite their advanced technology, humans still live in a semi-feudal society. Settlements near the dragon's territory are sparse and relatively small, but word can still easily get out if she attacks.
Human armies have access to a small number of jet fighters and tanks. Sure, they will only be used when deemed necessary (i.e: when it's the fastest way to solve the problem).
Dragons do have natural armor around the most important areas of their body. This armor can stop shots from even the strongest hunting rifles, but also gets seriously damaged in the process. Intermediate cartridges are less dangerous but she still wouldn't want to be peppered by them. Also, a .50 cal can seriously injure and potentially drop her in a single hit if she isn't wearing additional body armor.
Even if the villagers don't have access to it, they can ask the help of people who do and there are quite a few of those.
I wanted the dragon to feel more like the classical version that can strike fear into the heart of man. Sure, she still wouldn't be on the same level as Blue Star, White Night, or Slenderman; but more than enough for villages to bend to her will.
This also means she can't ask for the help of other dragons, especially since those she knows shun her, and shouldn't rely on minions to do the work for her either.
So, how should this dragon go about driving humans out of her territory?