How to add form submission into an URL and open it in a new tab

I'm trying to make a simple page with a single form in which the value entered there would be added to a URL and opened in a new tab.

here is an example of the page https://i.imgur.com/oWAoGpp.png

let's say the URL that I wish to be opened is: https://myurl.com/taketo/

and the value submitted is: test123

when clicking submit a new tab opens taking you to: https://myurl.com/taketo/test123

Note: The form page URL and the URL That opens in a new tab (https://myurl.com/taketo/) are not the same domain.

I have no problem with the page/form itself but I can't figure out the backend stuff.

Thanks for taking the time to read this.