I live in Switzerland and until proven otherwise, I think we have the best cartography in the world. map.geo.admin.ch and the Swisstopo app are absolute treasures to plan hikes.
At the moment I am trying to plan a hike in France where I cannot use the swiss map. I have tried several layers of Openstreetmaps but I don’t find any that seem as good to show the relief, the walking paths, public transport stops and type of terrain.
What is your go-to cartography option?

Up until they got bought and ruined, the hiking project was my favorite. So now I’m using Komoot (iOS). No issues so far but it’s been 2 weeks.
Oh you are right, Komoot is quite nice!