Very small waveform

I upgraded my Audacity. Since then, the wave is very small, so small, that I cannot really see a wave at all. It looks the same as if there is no sound. I figure I need to adjust the size of my wave, but I have not been able to figure out how to do that. So, I call upon the collective wisdom of this group to help me. Thank you in advance.

Is this true for all audio files, or audio you’ve just-now recorded? Is the volume low, or the volume is normal with small waves?

Which Audacity? What are you recording? What’s the microphone, if any? You can hear the recording, right, it just sounds really quiet?