I incorrectly flagged a post (simply caused by me being especially unobservant) before realizing I should have just voted-to-close (which I then did).
Is there a way for me to unflag, so I don't unnecessarily bother moderators?
Currently, it is not possible to unflag.
The following Stack Exchange post and some duplicated questions under the
Linked topic in the sidebar have some pro answers/arguments toward unflagging:
There is the option of putting a bounty requesting for more attention on that topic.
My point of view on this is that having a misclicked flag once in a while is ok (not a big issue).