Honda Civic Manual single clunk when pressing on gas and letting go?

I think I have an issue, I have a manual Honda Civic 2010. I noticed that when I'm already in gear, like already switched to second for example and I'm cruising just say from 22mph and then naturally slows down to 19mph so I press the gas a little to go back to 22 I hear a single like clunk noise and as soon as I let go of the gas I hear another clunk. It's mostly just on gears one and two that happens. Any idea what's wrong? Haha

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