Recently, a clean website has become a trend among website users. People seem to enjoy visiting a page that looks tidy, straightforward and sleek more than a glitzy and complicated one. Following that trend, Catch Themes had issued Clean Portfolio, a simple and clear free WordPress portfolio theme. You can use it for your personal or professional portfolio with all the necessary features and beautiful appearance.
The author gives many recommended plugin and many custom features so you can easily make your performance more interesting. Besides, it has high speed and is compatible with Gutenberg editor and all browsers.
To sum up, this free WordPress theme is one of the most ideal portfolio themes with minimal style and clean design. It is a featured-rich, responsive and super fast theme as well.
To build special features like Portfolio, Services,...you don't need any knowledge about coding. It only requires you to install Essential Content Type plugin in the recommended actions. The works of creating the posts for these sections may confuse a beginning user somewhat. However, I still suppose that the customization is still easy and you can find all the necessary instructions in the helpful documentation.