If that's a UI question, you can choose "healthy nonsmoker" in the mortality table drop-down, or uncheck "death" to remove it entirely and get a more-standard retirement calculator that assumes you're living at whatever age you calculate out to.

If you mean you want to decrease your odds of death, then "healthy nonsmoker" is also a good start, and there's a very deep rabbit-hole you can go into on longevity research, though no real option to uncheck "death" yet.

If you are asking about increasing longevity, it's mostly about taking care of yourself (rather than some magic pill or supplement). Don't smoke, exercise, maintain a healthy weight, get the recommended cancer screenings (e.g. mammograms and colonoscopies), find a reason to live (communities, family, purpose).