Shooting for black and white requires you to see a scene and think a little differently. You’re looking for a contrast of tones, not color, and it can be hard to “see” in black and white if you’re new to shooting in monochrome.
Here is a short video with some practical tips you can apply to create more dramatic black and white landscape photos.
If you want more help with your black and white here are a few more dPS articles on the topic: