https://www.openstreetmap.org/way/1196797045 this footway isn't even inside a building so it hardl can have any level.
You clearly have no idea what you are doing. Immediately fix all this damage and stop doing it worldwide!

I don't say level=1 is wrong on some of the roads, but layer=1 must stay too and converting everything from layer to level does not even solve what you pretend to be solving in the maproulette tasks.