Need to turn off autocorrect on a certain textbox, and need to enable uploads on web browser

Hello! I need to turn off autocorrect on my URL textbox, and I also need to enable uploads. I would also appreciate it if someone helped me make it a search and URL box, with the default search engine being Google, but it's not required. Here is my code:


And here is my Viewer tab:
Also, the "UploadNeeded" only opens the FilePicker, but it does not give the app the file. Thanks!