Well, WR, (that’s your Hollywood moniker).
Can you tell if your computer is on just by listening? That kills your background noise level right there. Yes, I can suppress it with Effect > Noise Reduction, but by the time I get I get it quiet enough, your voice is starting to sound bubbly and cell-phony. Way better to not record it in the first place.
There is a rule of thumb. If you go into a recording with a list of ways to rescue a disaster, you’re dead.
You sound like you’re recording in your mum’s kitchen. Are you? Plain white walls and tasteful polished wooden floor? Those are almost impossible to use for a good quality recording. If there’s just no other way, you can make up a Kitchen Table Sound Studio from plastic pipes and furniture moving pads.
https://forum.audacityteam.org/t/too-compressed-rejection/52825/22
You still have to unplug the fridge and move the ticking wall clock, but that will kill wall and ceiling echoes.
Side issue. You sent us two blue waves, one above the other on the timeline. You don’t have to do that and ACX/Audible would rather you submit Mono (one wave).
Use the drop-down menu from the black arrow to the left of the track > Split Stereo to Mono. [X] delete one track.
See what you can do about the machine noise and echoes and post back. What kind of microphone, interface and computer are you using?
Koz