Need a free Wordpress Theme Listing thumbnails

Hi could someone point me in the right direction. I'm new to Wordpress but used to do a lot of work with Html, CSS, and php forums (non coding).
I'm making a website for brand alternatives. So all the brands are displayed in a grid on the landing page like the image link below.

Then when you click on one image thumbnail it takes you to another page that has a similar layout of alternative brands but with descriptions below them that shows their price, about info etc.. and a link to their site.

I've tried installing a few themes but when I try to use them the pages are all blank and there is no content. So I'm looking for something with premade content so I can just remove their image thumbnail and stick in my own. Then delete their written content and replace it with my own etc...
Example layout link:
https://imgur.com/CiJCTkQ
Thanks.

 

For a free WordPress theme that includes listing thumbnails, several options can enhance your site’s visual appeal while providing the functionality you need. Here are a few popular themes to consider:

1. **Astra**: Astra is a lightweight and highly customizable theme that supports listing thumbnails. It’s perfect for creating a variety of websites, from blogs to portfolios. It also integrates well with page builders like Elementor and Beaver Builder.

2. **GeneratePress**: This theme focuses on speed and usability, featuring customizable options that allow you to create a unique layout, including listing thumbnails. The free version provides essential features, while premium add-ons offer more advanced customization.

3. **OceanWP**: OceanWP is versatile and suitable for various types of websites. It comes with built-in support for listing layouts and has options for thumbnail displays. Its compatibility with popular plugins adds to its functionality.

4. **Zillah**: If you're looking for a stylish theme, Zillah offers a sleek design with a full-width header and listing capabilities. It’s great for personal blogs or lifestyle sites and allows thumbnail listings to showcase posts attractively.

5. **Business Point**: This theme is designed for business websites but works well for listing types of content too. It offers a clean layout with thumbnail support, making it easy to display various listings.

You can find these themes in the WordPress theme repository or on their respective websites. For detailed reviews and to see more options, you might want to check out sites like [WPExplorer](https://www.wpexplorer.com/best-free-wordpress-themes/) or [ThemeIsle](https://themeisle.com/blog/best-free-wordpress-themes/).