There's your lie. You cherry picked from the 2nd article; then when it was pointed out both that one article was not representative, and was one of the earliest ones, you then cherry picked from the first article.
I take back the complement. I had such high hopes for you, too.
#3: Conclusions and relevance: In this small case series study, myocarditis was diagnosed in children after COVID-19 vaccination, most commonly in boys after the second dose. In this case series, in short-term follow-up, patients were mildly affected.