Show posts under categories on the home page

When creating a website using WordPress, I would like to reorganize the order in which the content is displayed on the homepage: the product categories are displayed first, and then the corresponding posts are displayed under each category in turn.

That is, when a user opens the home page, the first thing they see is the list of categories, and only when they scroll down the page can they see the posts under each category. Currently I have not found a suitable plugin or CSS code to achieve this layout. Are there any recommended plugins, code or other solutions that can help me achieve this effect?