User reactions to personalization in online stores vary significantly due to a complex interplay of factors, primarily stemming from individual differences in their perception and trust. One major cause is their privacy sensitivity, where some users appreciate convenience while others are deeply concerned about data collection and potential misuse, leading to feelings of being tracked rather than helped. Another key element is the relevance and accuracy of recommendations; highly tailored and useful suggestions often foster positive engagement, whereas irrelevant or repetitive ones can quickly lead to frustration and a sense of being misunderstood. Furthermore, users' personality traits and shopping goals play a crucial role: some individuals are open to exploration and enjoy discovering new items, while others prefer directness and find excessive suggestions distracting. The level of transparency regarding how personalization works also influences trust, as users may react negatively if they feel the process is opaque or manipulative. Finally, previous positive or negative experiences with personalization, both on the specific site and across the web, significantly shape their current expectations and responses. More details: https://vojni-ordinarijat.hr/?URL=https://abcname.com.ua/