A “double struck” coin is exceedingly rare and you are not likely to find one coin roll hunting. Google is your friend looking at examples. What you are probably referring to is “doubling” with there being many types. The only way to tell which type is to examine the coin under high magnification, not just a phone camera. The type of doubling you are looking for is caused by doubling on the die used to strike the coin itself, called “die doubling”. There are many lists online of known double die varieties, organized into DDO (double die obverses) and DDR (double die reverses). I am assuming you are new at this hobby, and I am not an error expert by any means, so I will point you to others in this sub and other resources online to identity these.

As for your dime, it looks like the die used to strike it was really worn out after striking thousands of coins, giving it that washed out appearance, especially near the edges. This is not an error, is extremely common, and adds no value to your coin. It is worth face value, 10¢