#1. The volume on the YouTube is way too low : the loudest bit is -16dB .
Normalizing to -1dB is OK for uploads to YouTube.
#2. There are clicks on plosives : “b” of “brothers”, “g” of “got” , “b” of “ball” , etc.
Those clicks can be removed using a DeClicker plugin for Audacity …
[ The DeClicker should be applied to the vocal track alone , as it it can damage the sounds of musical instruments ]
If you’re doing Voice Overs, some sort of de-clicker and de-esser plugins are essential , IMO.