To repost a TikTok to your friends’ feeds, either tap the Share button, then tap "Repost" or press down on a video, then tap “Repost.” You can find all of your reshared videos on the Reposts tab of your profile.
For more ways to share posts, try the Duet and Stitch features. Tap Share > Duet to create side-by-side clips with original TikToks, or Share > Stitch to add your own beginning or ending.