For Premiere Pro compatible video templates you can either double click the downloaded file and it will open as standalone project, or you can drag and drop the file into the project panel and start customizing it.

Envato gives you access to thousands of Premiere Pro templates with a subscription. Just search for the type of video template you need, like logo stings, titles, or a specific design style, and download it. Each template is a ready-made project file with editable layers, so you can easily customize text, colors, fonts, and animations to create a unique video without starting from scratch.