I’m not a big fan of selfies. It’s the typical end result I dislike, not the concept. Actually, photographing yourself is a very good way to experiment with different aspects of photography. Lists of photography educational photography exercises often include some sort of self portrait exercise.
With a bit of thought and creativity, you can create much better selfies. This video provides some insights on how.
If you’re intrigued, do a web search on “self portrait photography exercise” or something similar and you’ll get lots of information about improving your photography skills by taking selfies.