This research examines the use of ChatGPT among university-level students in the United Arab Emirates (UAE) and its effects on their learning experiences. The precise focus remains on the effects of ChatGPT usage on Student Engagement, Critical Thinking Abilities, and Academic Achievement. Using the cross-sectional design, the Constructivism Learning Theory supports this research. Data gathered using 353 structured questionnaires is analyzed using Partial Least Square-Structural Equation Modelling (PLS-SEM). Results showed that ChatGPT usage positively affects student engagement in the learning process. The effect of ChatGPT usage on Critical Thinking Abilities also remained significant. Finally, the findings indicated the positive effect of ChatGPT usage on the Academic Achievement of Emirati students. These results imply a robust, positive, and constructive role of AI technology, particularly ChatGPT, in the education and learning journey of university students in the UAE. It is concluded that ChatGPT is a useful tool that helps students by providing resources and suggestions throughout their learning process. It increases engagement, effort, and ambition in academic tasks, enhancing academic achievement. ChatGPT supports educational progress and motivates students to obtain knowledge by improving their interest in learning. Finally, the study's implications and limitations are discussed. Also, recommendations for future studies are proposed.