Men, do you unmatch girls you are no longer interested in? Or do you just ignore her and hope she gets the hint?

I admit, I don't unmatch people I lose interest in because I don't want to hurt their feelings. Also sometimes, I'm unsure of their level of interest so I keep them as a match. I basically rarely unmatch. I wonder about guys' perspectives.
Men, do you unmatch girls you are no longer interested in? Or do you just ignore her and hope she gets the hint?
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