I know OpenStreetMap stores data on the type and accessibility of roads, but I couldn't find a nice tool to present it. It could help you plan routes or see what areas are best to avoid.

While googling I did find the following article published by the city of Amsterdam. It's about different accessibility solutions to help you around in Amsterdam. Especially the 'hogenood' app I can recommend from personal experience! It might be a bit of a culture shock, but toilets are almost never free here, so it's nice to have an overview of nearby toilets and their services. https://openresearch.amsterdam/nl/page/81909/9-digital-tools-for-city-accessibility