The Dutch English trap is one of the most frustrating experiences for Dutch learners in the Netherlands. You begin a sentence in Dutch; the Dutch person immediately responds in fluent English. This is not rudeness — Dutch people learn English from age eight and switch to it automatically when they detect a foreign accent, genuinely trying to be helpful. But for your language learning, it is a problem.
Strategies to stay in Dutch: make your request explicit and early. Start with: Mag ik alsjeblieft in het Nederlands oefenen? Ik leer Dutch (May I practise in Dutch please? I am learning Dutch). Most people will respect this immediately. Alternatively, stick to Dutch even when they switch to English — answer in Dutch, and most will mirror back. Learn to say: Sorry, ik probeer Nederlands te oefenen — kun je dat in het Nederlands zeggen? (Sorry, I am trying to practise Dutch — can you say that in Dutch?)
Context matters enormously. In shops, cafes, and busy service environments, staff often default to English as efficiency. Language partners, friends, and colleagues are easier to maintain Dutch with. The more you speak Dutch in social situations, the faster the automatic English switch slows down. Living in smaller Dutch cities (outside Amsterdam and Eindhoven) also helps — fewer English-speaking expats, more expectation that Dutch is the common language.