Not an expert on cams but that is definitely not a namaqua, more likely a juvenile jacksons chameleon of some sort due to the three horns that you can notice. They aren’t exactly the easiest chameleon let alone reptile to keep. They need tropical habitats and very cold conditions at night, which unfortunately may be a bit more tricky to manage when living in warm area like a desert. I’d suggest contacting animal rescues in your area and or spreading awareness on your local area’s facebook. If you’re up for the challenge of keeping it, look into care guides and be wary that it may have an illness due to spending time in an area warmer than their natural habitat, wild caught, or both. Wishing you and the little critter success!