header.php Meta Name Keywords

I have the main theme, and the Child. In the main theme, I inserted directly into the header.php the meta name “keywords” but after the insertion, the keywords do not appear in Ranking Coaching, 100 Security, etc … It is as if the keywords did not exist. Can anybody help me ? Did I do something wrong ?

http://www.bandashowfactory.com.br/wp-content/uploads/2019/04/Captura-de-Tela-2019-04-26-às-16.38.07.png

Tenho o tema pricipal, e o Child. No tema principal, inseri diretamente no header.php o meta name “keywords” mas após a inserção, as palavra chave não aparecem no Ranking Coaching, 100 Security, etc… É como se não existissem as palavras chave. Alguém poderia me ajudar ? Fiz algo errado ?

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