Are there rhetorical questions in i was only 19?

No, the phrase "I was only 19" is not necessarily a rhetorical question. It could be a simple statement of fact reflecting a person's age during a particular time or event, or it could be used as a way to convey certain emotions, such as regret, nostalgia, or innocence lost. Without additional context or understanding of the speaker's intent, it is not accurate to classify this phrase as a rhetorical question.