New concrete can look pretty sweet. If you're working with old you're probably not going to get the look you're seeing on new. Did it for a clients wine room I did, on old concrete, and wished I wouldn't have filled cracks and patches from carpet tack (took the stain differently). Would like to of seen it with a top coat but they wanted it to have an old dull look. They seemed to have been happy. A lot of steps: acid wash/etching, rinse multiple times with baking soda until ph balance was correct, acid base stain applied, wipe up excess paddling, retain with accent color.....
Nothing like the aroma of muratic acid in a confined space.