Coco Gauff 'sad' about US TikTok ban after reaching Australian Open quarter-final - video

American tennis star Coco Gauff mourned the loss of TikTok's app in the United States, writing 'RIP TikTok USA' on a camera lens following her victory over Belinda Bencic at the Australian Open. Gauff said the app provided her with an 'escape' and its removal might force her to