Yes, plenty of people want to speak Dutch with you, but you need to go where they already are rather than waiting for them to find your post. At low B1, your best options are language exchange apps, Discord servers, and local or online conversation groups. The key is to be specific about your level and what you want to practice.
Start with language exchange apps. HelloTalk and Tandem are built for exactly this. On HelloTalk, search for Dutch speakers learning English, send a short voice message in Dutch, and suggest a 15 minute call. On Tandem, write a profile that says "B1 Dutch, want to practice speaking and learn about Dutch culture." Expect maybe one in five replies to lead to a real conversation. That is normal.
Discord is often better for regular practice. Search for Dutch language servers or general language exchange servers with Dutch channels. Join a voice channel during a scheduled event, even if you just listen the first time. Many servers have weekly voice chats for different levels. If you cannot find one, start a small one yourself. A group of three or four B1 learners meeting weekly can be more useful than one native speaker who is hard to schedule.
For Dutch culture, combine speaking practice with something concrete. Ask your partner to explain a news item, a holiday tradition, or a Dutch song. That gives you vocabulary and context at the same time. Apps like Dutch Fluency can supplement this, but real conversation is what improves speaking speed and confidence.
Be honest about your level. Saying "I am B1, I make mistakes, I need you to slow down sometimes" sets clear expectations. Offer something in return. If you are a native English speaker, offer 15 minutes of English practice. If not, offer help with another skill or just be a reliable, punctual partner.
Practical next steps: update your HelloTalk and Tandem profiles today, join two Dutch Discord servers, and send three short voice messages to potential partners. Schedule one 20 minute call this week. Keep a notebook of words you had to look up during the call. Repeat weekly. Consistency matters more than finding the perfect partner.