What is a theme?
A theme in WordPress is an important component that determines layout, design, colors, style, and other features and elements. Like plugins, there are thousands of different themes to choose from. Both free and paid. The theme’s files include a number of template files, which set a standard for the entire website. In short, the theme determines the structure of many elements of the website.
If you go under “appearance”, you can choose from many different themes from here. Many themes are actually made for a specific niche. For example, if you are a photographer, there are themes created and optimized directly to be used on a photographer’s website. For example, there could be a high focus on a smart portfolio and a delicious display of images. Many themes also come with built-in page templates, so you can set up your website faster.