x() {
        const tryouts = [500, 1000, 2000];
        const increaseTryoutIndex = () => {
          tryoutIndex += 1;
        };

        /* remove odd elements */
        const recursiveSetter = timeout => {
          setTimeout(() => {
            if (tryouts[tryoutIndex + 1] && ненайдено) {
              /* retry */
              делать_чтото

              increaseTryoutIndex();
              recursiveSetter(tryouts[tryoutIndex]);
            }
          }, timeout);
        };

        recursiveSetter(tryouts[tryoutIndex]);
      },