Not sure what exactly you want me to touch on. But pardons can’t be for future actions.
Let’s say you rob a bank and get pardoned. Having received that pardon doesn’t mean you can go rob that bank again free of charge.
If you had robbed that bank again after getting pardoned you’d face prison time. But if the president happens to believe in second third chances and grants you a second pardon for the second robbery you could walk free.