The app won’t let you without signing in, I don’t think, but i think the website does. Try this link or you can go to deezer.com and if you go to the hamburger menu at the bottom it has an “explore channels” option.
Edit: It’s odd they don’t let people browse I’m a more friendly way. And just so you know, once you sign up, you can search, make playlists, download for offline etc, the mostly same as spotify. When u first sign up, it also give you the option to migrate all your spotify plsylists over. Out of my thousands of songs saved, it did have 2 or 3 that didn’t transfer over due to just not having it.