Sooner or later, everyone looks for closure with some issue they’re struggling with. The unfortunate truth is you can’t ever just get closure. You can’t even give closure to someone else. That’s not how it works.
If you are seeking closure, you’re not ready for it. You’re still worried about the issue, and still not quite ready to put it to bed.
One day in the future, you’ll think about that thing you wanted closure on, and you’ll realize you have it. You won’t know how, or why, but either you’ve somehow come to a satisfactory resolution to the problem, or you just don’t care anymore… which might as well be the same thing.
Or you die. That works too.