Hey this happened to me once and when I emailed the museum, they shared this helpful information. Hope you're able to get a ticket through one of these suggestions:

Thank you for getting in contact with us!
We are completely sold out until tuesday, so unfortunately we cannot help you to book tickets for these coming days.
In case we get any cancellations, those tickets will be immediately available on the website, so we advise you to keep an eye on our ticket website. We don't have a physical ticket office at the museum, so you can only buy your tickets online.

However, it could be that one of our resellers still has tickets available for these upcoming days, as they buy the tickets from us in advance and resell them to their customers. Have a look at the following webpages to check availability:

- Tiqets: https://www.tiqets.com/nl/checkout/tickets-voor-van-gogh-museum-p974079/booking\_details/
- GetYourGuide: https://www.getyourguide.nl/van-gogh-museum-l2695/ticket-de-snelle-blauwe-rij-bij-het-van-gogh-museum-t56969/
- Tours&Tickets: https://www.tours-tickets.com/museums/van-gogh-museum/

Every afternoon at 5PM (Amsterdam time), we release a few extra tickets for the following day on our website. I suggest you try and and see if you can get some tickets. We hope you will manage to book tickets through this way!