There could be several reasons why friend requests on Facebook are down by 10%. One possible explanation is that users are becoming more selective with their friend requests, and are being more cautious about who they connect with on the platform. This could be due to concerns about privacy and security, as well as a desire to curate a more meaningful social network. Another possible explanation is that users are spending less time on Facebook overall, and therefore are not sending or accepting as many friend requests. This could be due to the rise of other social media platforms, such as Instagram and TikTok, as well as concerns about the negative effects of social media on mental health and well-being. As a product manager, it would be important to gather more data and conduct user research to better understand the cause of the decline in friend requests. This could involve analyzing user behavior and engagement patterns, as well as conducting surveys or focus groups to gather feedback directly from users. Based on this research, potential solutions could include improving the user experience of the friend request process, offering new features or incentives to encourage more friend requests, or exploring new ways to expand the user base and increase engagement on the platform overall.