That’s basically the terminator 2 idea. Judgement day is always going to happen one way or another. There’s no stopping what is predestined in this timeline. You could of course jump to a different dimension/timeline but it wouldn’t change the originalParadox-Free Time Travel Is Theoretically Possible, Researchers Say
In a peer-reviewed journal article, University of Queensland physicists say time is essentially self-healing. Changes in the past wouldn't necessarily cause a universe-ending paradox. Phew.www.npr.org