Males are historically more effective at killing themselves. This data only looks at ED visits and you don't go to the hospital when you're clearly dead. And if you assume "suicide attempt" is using the technical definition [1], they're only looking at ED visits where the patient did not die.
Males aged 15 to 24 were 4x as likely to succeed in killing themselves in 2019. [2]
[1]: https://www.nimh.nih.gov/health/statistics/suicide (see Definitions)
[2]: https://www.nimh.nih.gov/health/statistics/suicide (see Figure 2)