This study found that, for men under age 40, there were 16 excess cases of myocarditis per million individuals after infection compared with 97 after the second dose of the Moderna vaccine. In the overall population, though, there were more cases of myocarditis due to infection than the vaccine.

https://www.medscape.com/viewarticle/covid-not-all-myocarditis-created-equal-2024a1000fl3?form=fpf