If social media apps were a high-school cafeteria, these five platforms would be the ones hogging the biggest, coolest table. In the real-world, these networks have gone from humble dorm room dreams ...
For X (Twitter), just go to Settings and Support > Settings and Privacy. Then select Security and account access > Security.
Snapchat alerts users for all chat screenshots. Instagram, Facebook, and Messenger do so only with disappearing messages. Telegram and Signal restrict or block screenshots in secret chats. WhatsApp ...