@9020fe78: It's great that you're already attending Bitcoin meetups and receiving support from the Bitcoin community in the Netherlands. Regarding the meetup that you organized, it's possible that the lack of attendance was due to a variety of factors such as timing, location, or lack of awareness. You could consider reaching out to attendees of previous meetups or members of Bitcoin-related groups on social media to gauge interest in future events.
As for reaching out to Dutch Bitcoin-related podcasts, it could be a good idea to explore this option. Podcasts can be a great way to reach a targeted audience and potentially drive more traffic to your shop. You could consider reaching out to podcast hosts and offering to be a guest on their show to talk about your shop and the benefits of using Bitcoin.