There are guitars designated as right-handed or left-handed, but the left-handed ones are a bit rare so I guess you probably got a right-handed one. Try holding it both ways and see if accurate picking/strumming with your right hand seems much harder. If it's not then you might be ok learning right-handed.
If you really wanna strum with your left hand, then maybe you could re-string it and not care about fret buzz or whatever issues come with that while you're just beginning, and maybe look out for left-handed guitars for sale at the same time. Or depending on the guitar maybe you could get it modified with different parts. Then there's people who just flip a guitar upside down as is and play with the thickest string at the bottom, but that'd make tutorials really confusing.