The issues you're describing are most likely due to a combination of improper microphone technique and your recording environment.
First, you need to ensure you are speaking into the front of the microphone—the side with the TOPPING logo. This microphone is designed with a specific polar pattern that is most sensitive from the front. Speaking into the top or the back of the microphone will result in an "off-axis" recording, which will sound thin and distant.
If you are already speaking into the front of the microphone and still hear noticeable room reverb, it means your room acoustics are affecting your recording. The reverb and hollow sound are caused by unwanted sound reflections bouncing off hard surfaces like walls, floors, and ceilings.
To fix this, you can:
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Apply acoustic treatment to your recording space to absorb sound.
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Adjust your microphone placement. Try to record away from corners and walls to minimize the amount of reflected sound the microphone picks up.