That's the intent of OpenSidewalks, but last I checked it was only available for three cities.
I just stumbled across this routing profile for the osmand app, maybe this also helps(?) https://github.com/LorenzoStucchi/Wheelchair-OsmAnd
Not at the moment. It takes a lot of mapping and a lot of work to get this correct.
You can however try to create your own routeplanner using OsmAnd, but you'll need to be familiar with OsmAnd, XML, some programming and OpenStreetMap. (I created the Ski routeplanner a few years back this way)
OpenStreetMap community
Everything #OpenStreetMap related is welcome: software releases, showing of your work, questions about how to tag something, as long as it has to do with OpenStreetMap or OpenStreetMap-related software.
OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
Join OpenStreetMap and start mapping: https://www.openstreetmap.org.
There are many communication channels about OSM, many organized around a certain country or region. Discover them on https://openstreetmap.community
https://mapcomplete.org is an easy-to-use website to view, edit and add points (such as shops, restaurants and others)
https://learnosm.org/en/ has a lot of information for beginners too.