Ever wondered if you're trying to act Alpha and other people can see right through it? Many guys try to act Alpha without actually improving themselves in ways that would make them more of an alpha male, and as you might've guessed -- this usually doesn't work out very well for them.
Many guys put on a facade as a 'fake alpha' and usually do a few very common things, so if you don't want to be viewed as this unapproachable guy -- make sure you're not doing these things.