Noise Gate Not Working

I’m new to using the Noise Gate. I watched a few tutorials and followed what they did but my Noise Gate is not applying to my audio. Could anyone help?

If you’re using Audacity 3.0.0, then you need to update to Audacity 3.0.2.
There’s a bug in 3.0.0 that causes Noise Gate to fail. It has been fixed in 3.0.2 (there are some other bug fixes also).
The latest version of Audacity is available from the Audacity website: