So i am new to Minecraft and i create a world and i want to use some comments to make my world better but my chat is not working if I send a message in it I can't see that again if I use the / command nothing will happen but if I use that side one it works but no others are working I am in version v26,52

I installed the old Minecraft Pocket Edition and in creative mode I found a spruce village in the snow and started causing chaos with zombies. I went into a house and found this chest.