Change.org does not allow you to donate directly to the people running the petition, but to the organization running the site. This may be confusing, but it’s true.
https://www.quora.com/What-does-change-org-do-with-its-donations-Do-they-go-to-the-activists-or-somewhere-else

If you want to get Twitter back, you should ask Jack Dorsey and/or someone associated with the company who thinks pre-Musk Twitter is better with a petition to start some kind of crowdfunding to buy it.