Yeah, but they will find you if they wanted to if you’re alive and do plan on staying alive. For example, most mountains have systems of tollbooths and sherpas, you can’t simply walk in and enter the realm of public oblivion. So for example if you plan on walking into the mountains until people assume you’re dead and then leave, the right people will see and you’ll catch back on. Made worse because we have progressed so far into forensics and many countries are using that to monitor peoples’ whereabouts. Soon there will be no running away from anything you want to run back to and no pretending to run. An insistent person will have to do what persecuted monks from Rome did and live unchartedly or squat with a person trustworthy enough to keep the secret. It’s why witness protection only works when it’s government-sponsored.