To bulk download all videos from a TikTok user, follow these simple steps: 1. Open the Itkool app and navigate to the TikTok user's page. 2. Click on the "Download" button. A prompt will appear, offering the option to download either individual videos or all of them. Choose the latter. 3. Specify your preferred video quality. 4. Click on the "Download" button to start the process. Sit back and wait as the videos begin to download. By following these straightforward instructions, you can easily download all of a TikTok user's videos in bulk, hassle-free.