You can find simple and attractive avatar pictures at the following website: 1. Unsplash: This website provides high-quality photos and avatar pictures. You can directly search "avatar" to find your favorite picture. 2.Pexels: This is also a website that provides high-quality free photos and avatar pictures, and you can also search for "avatar". 3.Pixabay: this website provides all kinds of pictures and vector pictures, but you need to filter them when searching for "avatar" because some pictures do not meet the requirements. 4.Shutterstock: This website is a good choice if you want to find paid high-quality avatar pictures. 5.Dribbble: This website is a community where designers share their works. You can find some very creative head designs in it. In addition, you can also search for related keywords on social platforms such as Pinterest and Instagram, and there may be unexpected gains.