morality for the radical pessimist

I am new here, I am looking for an answer to the question of what is the most effective way to help, but with specific ethical assumptions. Namely, in a theoretical situation; to help a suffering being or to make the being not be born at all, I believe that one should ignore the suffering being and rather focus on making sure that the other one does not occur. I don’t think that death has a negative value too, so the arguments “it will save someone life” don’t appeal to me, what matters is the elimination of suffering and the best way not to suffer is not to live. The best way is never to be born. With such assumptions, what is the best way for effective altruism?