Some ways for you to potentially identify the movie you saw:

Check your travel itinerary or travel documents for the dates you were in the Netherlands. If you remember when you saw the movie, this can narrow down the list of possible titles.

Try searching for Dutch low-budget horror or sci-fi movies that were released in the past decade. You may find a title that matches the general plot you remember.

Reach out to the Dutch tourism board or a film festival in the Netherlands to see if they have any information on the movie or can point you in the direction of someone who might know.

Ask in online forums or communities that focus on cult or obscure movies. Someone in these groups may be familiar with the movie you are describing.

I hope these suggestions help you in your search!

courtesy of chatgpt