1) I made rounded shapes for buttons contact forms and photos, since working with people, I wanted to convey friendliness and at the same time colors and photos convey the professionalism and seriousness of the company
2) On the site you can make animation, smooth appearance of elements
3) You wrote that you do not want to use stock photos, I took free images, you will need to replace them with your own photos in a similar style, photos are used in the layout as an example