"i get up at 7:00 am . my friend get up at 9:00 am . he doesn't get up early"
There are sentences in Present Simple Tense, however, not all pronouns and antecedents agree. The author had one mistake.
Sentence 1: the pronoun "I" agrees with the verb.
Sentence 2: the mistake is that the subject and the form of the verb don't agree. As the subject "my friend" is singular, there should be "gets up".
Sentence 3: the pronoun and it's antecedent agree