First of all: welcome to our Community!! It's wonderful to have you around
And now to your problem: I'm very sorry to hear you've lost your boosters. These items are saved on the device and account you won them in and cannot be transferred. Here you can find more information about this.
I hope it helps! Please come back to the Community if you need more information on it or if you just want to chat about the game, participate in our contests or have a good time!