It’s the same old question everybody has been asking since way back: how do you get more retweets on Twitter?
Answer: you have to make an effort. You can’t put any old junk out there and expect your followers to automatically pass it on. You have to strive to make everything readable and retweetable.
It’s different for celebrities. Their fans will blindly share any old dross. But for common or garden folk like you and me, generating retweets takes time, and it takes work. You have to put in the effort. Each and every time.