I am been play the game fine gathered resores and mining was ok but, but then i tried mining obsidian with a dim pick and was working then try mining stoned with and also didn't work and i tried uninstalling it it still wont work on any worlds
I'm not sure your issue is very clear. You can only mine obsidian with a diamond pick axe, it takes a while usually, atleast 10 seconds, and if you let go of the button or stop looking at the block that time would reset.
If you are saying that the diamond pick axe now won't mine anything including even stone, I've never heard of that before, especially if it's happening after a restart or creating a new world. Are other tools working (shovel, axe)? If so, you may need to contact mojang support for some help.
I think he means that the stone pick wont mine obsidian...for some reasons 😂😂
Stone picks can't mine obsidian anyway, at least, to get a drop. By "dim pick" I assume he means diamond pick. Either English is not his first language, he has really bad predictive text, or he has a support worker. Whichever it is, he is clearly having problems 🙄