If my friends will have it why can’t I redownload it again

TikTok is currently blocked in the US due by law:

About availability of TikTok and ByteDance Ltd. apps in the United States - Apple Support

https://www.nytimes.com/2025/01/17/technology/tiktok-ban-sale-supreme-court.html

It has NOT been unbanned -- yet:

https://www.nytimes.com/article/what-we-know-tiktok.html

Apple will restore the app to the app store if/when legally allowed to do so.

Per the NYT article, "the law penalizes app stores, like Apple and Google, and other internet companies, like Oracle, for distributing or updating any TikTok content". Therefore, TikTok is currently unavailable on the Apple app store and Google app store. Apple, nor anyone on this community change that. The US Supreme Court recently upheld the ban and therefore only the US Congress can change the law at this point.

While you are at it, this may be a worthy read:

https://www.nytimes.com/2025/01/17/well/tiktok-addiction-ban.html

What’s weird is, everybody is getting a message that it’s un banned when they open the app. But you can’t re-install. This is frustrating I don’t understand why it’s not banned but you can’t get it on the App Store.

i need tik tok back

Why I can’t download tik tok in the App Store?