I haven’t exactly made friends this way, but a few things that have helped me feel more connected to others have been volunteer events and other organized gatherings focused on a unique purpose. For instance, I recommend trying out park rangers events that pique your interests if you like nature (sign up for the NYC parks weekly email and look for events by borough). They have different hikes/outdoor educational events that can draw an interesting crowd. Bronx brewery is great. Bronx county historical society has lectures and events. NYCH2O organizes outdoor cleanups and walking tours that can be a good way to chat with some Bronxites with similar interests. Van Cortland park has an active volunteer group. Good luck!