New residents in my apartment complex keep stealing my parking spot because they're lazy & rude and don't want to find empty spots. What should I do?

New residents in my apartment complex keep stealing my parking spot because theyre lazy & rude and dont want to find empty spots. What should I do?
So, I recently moved into a brand new apartment complex in March of 2022. I was one of the first people there, even before the elevators were properly finished. In this motorcycle and biking parking lot, I and others here, have our own spots. I've had my own spot since I've been here. It is very clearly an occupied spot, as I have my bike mat there, and my chain. And my bike is always there when I'm not at work.

But ever since May and ever the rising gas prices, more and more people have been using this parking area, for motorcycles, scooters, and bicycles. A couple of times, I had people steal my parking spot while I'm at work.

I abided by the Hanlon's Razor: "Never attribute to malice what stupidity can explain," and assumed they didn't know any better. And the three or so times it's happened, I pushed or moved their vehicles out of my spot.

But now, due to said gas prices and more people moving into the apartment complex, the parking area is starting to become full. It's not full yet; there's still PLENTY of spots in the back. But the problem with these f*cking assholes is, they don't feel like going to the back.

This Monday, some little pencil-dick left a note on my bike. It was in Korean, but it said something along the lines of "You are rude and I don't like you. Is a bike that precious to you? Why don't you go to sleep with your bike if you love it that much?"

So now, there is malice involved and not just stupidity. I know who wrote the note too; the first guy who parked in my spot, because I had to move his scooter out of my spot twice.

The recap is, I have had my own parking spot since March, and now new residents have come into the apartment complex, and are bitching because they're too lazy to use the back spots and want to steal my own parking spot. I'm about to throw their sh*t into the river the next time they try to steal my spot.

What should I do about this situation?
Updates
1 y
I would've also said this, but ran out of typing space:

My spot is in the very front, so it's probably one of the best spots, if not THE best spot there. Other spots are in the back, but these assholes just don't feel like going back there, if they can steal mine with convenience.

And the building managers wouldn't care about any of this stuff going on, and likely don't speak English anyway.
Updates
1 y
In Korea, people would rather abandon old bikes and furniture rather than pay $30 to dispose of them. I found an old bike and will use that as my placeholder while at work. Nobody can say sh*t and they won't even know it's "my second bike" in the spot now.

https://i.ibb.co/jRccg6V/Bike-Lot-01.jpg
https://i.ibb.co/jRccg6V/Bike-Lot-02.jpg

As you can see, plenty of spots in the back that these assholes won't take. https://i.ibb.co/bXhVM3f/Bike-Lot-09.jpg
https://i.ibb.co/27VQBLj/Bike-Lot-05.jpg
New residents in my apartment complex keep stealing my parking spot because they're lazy & rude and don't want to find empty spots. What should I do?
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