I lost my TikTok app

TikTok was banned by the US government. Apple as such, had to comply and remove it from the App Store. If your Apple ID is set to the US, you won't be able to install it, until the issue is resolved and the Government allows it to return.

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

So has everyone in the USA. The app is banned and Apple has removed it from the App Store.

If you're in the U.S., you will not be able to re-download TikTok or any other Byte Dance apps.

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

That is because TikTok has been banned in the US. With that major tech companies such as Apple have complied with the law by removing it from their App Stores to avoid ruinous fines and potential legal liability.

Please read the "Did you know?" header at the top of this page for Apple's statement.

Also please review my User Tip regarding the TikTok ban situation.

Understanding the TikTok Ban and Why You … - Apple Community

I lost my TikTok

Kogenkellly wrote:

I lost my TikTok

Time to take up a new hobby.