Imo State, focusing on Facebook users in Obowo Local Government Area. Anchored on Algorithmic Gatekeeping Theory and Uses and Gratifications Theory, the study adopted a survey research design. Data were collected from 312 respondents using structured questionnaires. Analysis revealed that social media algorithms significantly shape news exposure patterns, credibility evaluation, and engagement behaviours such as liking, sharing, and commenting on posts. Findings further indicated that personalised news feeds influence the type of content youths encounter, while algorithm-driven distribution may limit exposure to diverse viewpoints, fostering selective information consumption. The study concluded that social media algorithms play a critical role in shaping youth news behaviour in digital environments. It recommended that youths enhance digital media literacy, social media platforms improve algorithmic transparency, and educators and stakeholders promote responsible news consumption practices to mitigate the effects of biased or filtered content on information access and critical thinking.