The Netherlands have sizeable number of larps of various sizes genres and genres, including a few that already have international players. There are many different larp events in the Netherlands, small and larger ones, and a lot of different styles such as fantasy, historical, contemporary, post-apo and sci-fi.
Don’t speak Dutch? No problem!
Most larp’s have Dutch as the official language, though most Dutch people can speak English and find it to be no trouble to switch to English- before, during and after the larp. Many also use English terms or will just add them in for you.
You could also make use of your English. Some larps use English as “this person speaks another in game language”. So the people who speak the same language (which isn’t the “common” of that setting) can talk together in English.
We advice you to get in contact with the organisers of a larp to see if they are able to accommodate English speakers.