One handed keyboard

He’ll good day to all there was the option to add a one handed keyboard but unfortunately the option does not appear anymore does any know of any other way to display the option and the keyboard I recently had a stroke and only have the use of my right hand for typing while the option was available it was as ideal for me to use it but now I am having many frustrating moments typing as the keys are so close together on the qwerty keyboard does any one know of an alternate or how I should go about retrieving the one handed keyboard I await your response

thanks in advance