Introduction always includes the presentation of the topic.
Your writing should have clarity so that complex procedures or sequences of events can be understood, defining key terms where appropriate, and be substantiated with relevant research. The paragraphs in the body of your essay should contain a topic sentence introducing the topic to be discussed and relating back to the thesis.
You do not have to agree with the author of the analyzed text on everything.
In order to provide a good introduction, it is recommended to include the background information, hook sentence, and the thesis statement. Often, people get used to seeing homeless people on the streets never thinking about the reasons that brought them to the place where they live now.
Summarise Give a condensed version drawing out the main facts and omit superfluous information.
When in doubt, ask.