The left button does not work

when creating a new world i cant choose any thing by clicking on it for example: when i need to choose the world difficulty i cant  left click or scroll to choose any. so the only way to do it is using the "tab" button. not only there, when i want to visit my profile and enter to it i can not to click on the back button, how many i try to click it doesn't work, so my only choice to go back is using the "esc" button on the keyboard.

 

and thank you to read this and i hope to make it right, and i love what are you all tryna doing in Minecraft bedrock to make it better.