In the 2019 documentary “The Great Hack,” directed by Jehane Noujaim and Karim Amer, they talk about the Facebook–Cambridge Analytica data dispute. Professor David Carroll of Parsons and The New School, Brittany Kaiser, a former Cambridge Analytica business development director, and Carole Cadwalladr, a British investigative journalist, are featured in the documentary. Their stories overlap to illustrate Cambridge Analytica’s influence in politics in numerous nations, including the UK’s Brexit campaign and the US’s 2016 elections. Big data relates to large, difficult-to-manage data volumes – both structured and unstructured – that constantly inundate businesses. But it’s not just about the type or quantity of data; it’s also about what companies do with it. Donald Trump’s 2016 campaign’s “digital” section was known as Project Alamo. Cambridge Analytica was another company participating in Project Alamo. They were called the “brains” of the data. They collect data on Americans and use it to target them with political advertisements. Prof. David Carroll was attracted to this firm because of the large amount of information it possessed about Americans. His purpose was to launch a lawsuit against Cambridge Analytica so that he could access the voter profile that the company had produced. The film “Death of the Private Self” is related to the documentary they both emphasize how social media users share a big amount of personal information about themselves on the internet, while the documentary shows what big data businesses do with that data. The article examines Facebook’s evolution and how it affects our lives and self-esteem, as well as other social media networks. Users frequently compare themselves to others on social media, lowering their self-esteem. As consumers continue to disclose more personal information on the internet, the amount of data collected about them grows considerably.