I’m a digital graphics artist and have worked with digital images for years. The original photo is low resolution and too small in size. It is a raster or pixelized image at only 72 dots per inch. It’s impossible to enlarge or blow up a small, low resolution image and make it better. It just makes it “fuzzier”. On the other hand, one can take a large raster image and reduce it and make it sharper.
You would need someone who has expensive image enhancing capability software to see it any better. Even then, the software guesses or interpolates what the pixels are. Get a larger, high resolution copy of the image and anyone versed in Photoshop can help you.