If you want to use someone’s video on TikTok, there are a few things you need to know. First, you need to find the video. You can find videos by searching for keywords or by using the app’s search feature. Once you find the video, open it and tap on the “Share” button in the bottom left corner. Next, select “Use for TikTok” from the list of options. Finally, enter your TikTok username and password in the appropriate fields and tap “OK”. ..