Robots are said to be future working machines. Its good to get used to them by playing robotic games. Pixels Unknown Battle Ground is a such a game that lets you create your robotic profile and fight with enemies.
It is safe to not connect to public WiFi if you are too concerned about your data. However, it is very important to access internet, it is recommended to have optimal level of security apps installed on your smartphone, PC or laptop before connecting to public WiFi.