I strongly suggest reading the links I provided. The OSM website is not intended for users, it's intended for editors. OSM is not a map, it's a database of map data, which different applications can choose to render as they see fit.  For example, here is a map that uses German OSM tags when rendering: https://openstreetmap.de/karte/

Again, I would suggest familiarizing yourself with the wiki and understanding why this large, rather old project does things a particular way before deciding you know best.
https://wiki.openstreetmap.org/wiki/Tagging_for_the_renderer
https://wiki.openstreetmap.org/wiki/Renderer