How to take the item from the floor quickly in minecraft?

I have trouble about taking the item from the floor.
How do I fix this problem? Is my computer bad? Or something else? Because I can't get anything in droppartys or something.

Your question makes 0 sense. Everyone picks up items at the same time unless your lagging, to fix that you need to get better internet. Try asking a question that people can understand "I have trouble about taking the item from the floor" makes no sense.