It might be impossible nowadays to find left handed saws in stores. They probably have to be ordered. But, I have found that being right handed, if you use a left handed saw, it is easier to use.
Right handed saws, are made with the motor on your eye's side and the blade on the outside of the saw, ........you can't see what you are cutting without leaning over the saw. This is a dumb safety feature. Real craftsmen will position themselves to where they can see the cut anyway, defeating the purpose of being a righthanded saw, and in some cases making it more dangerous than using a lefthanded saw due to the awkward position.
If you are right handed and can buy a left handed saw, you will feel like ....Holy Cow.... Where has this been all my life, you can free hand stuff that used to require a strait edge. Of course, left handed saws have the motor on the outside and the blade near your eye line. Like it is supposed to be.