How can I get out the TikTok I’m so poor

You need to wait for what is not available in the App Store to be re-instated.

Meanwhile, if you encounter any challenges with third-party applications, the best course of action is to directly contact the app developer for further assistance. Here's a brief guide on how to do it:

1. Identify the app developer.
2. Visit their website or app store listing.
3. Look for their contact information or support channels.
4. Clearly describe the issue you are facing.
5. Provide any necessary information they may need.
6. Follow their instructions and provide feedback.
7. Be patient and follow up if needed.

By reaching out to the app developer, you increase your chances of receiving accurate and personalized support for the challenges you're experiencing. To contact an App developer --> How to contact an app developer - Apple Support

TikTok has been banned by the US. government and therefore it will not be available in the US. until the ban has been lifted.

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

Also, read Zachyy's User Tip for more information about this

https://discussions.apple.com/docs/DOC-250009418