Does coming out of a relationship that didn't work out knock your motivation In dating?

For anyone that actually lived equivalently or similar for example people that fell out of long term relationships, they just don't seem motivated to date again even if they got over the person, it's like it hit a psychological switched that takes away all their motivation, is it from a fear of investing time again? Or something else?
Does coming out of a relationship that didn't work out knock your motivation In dating?
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