Android keyboard with word prediction, word autosuggestion, and record typing habit for each users

Hi, im developing custom android keyboard, but i need words autosuggestion, next word prediction, emoji prediction, and also the keyboard able to learn every typing habit of each users, you can see this feature in Swiftkey keyboard, Gboard, Fleksy keyboard in playstore.

this is my explanation: https://youtu.be/WGysV6oDLGM