Why do guys match on tinder and then don’t talk or unmatch after a while?

I just don’t get this app, guys complaint that girls don’t text first but when I do I never get an answer back. I need someone to shed some light on this! Ps: I have given people a match by mistake I can understand that too but im talking about other scenarios where people match and never talk and never unmatch for example.
Why do guys match on tinder and then don’t talk or unmatch after a while?
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