Here is a link to a Vid on Making your mix sound pro with Audacity

Hard limiting is a drastic measure and is meant to be used in a different way. It’s primary function is to remove clipping. So look at your overall file and instead of limiting to quietest just scrape off the top transients. Maybe -1 or -2 dB. This will keep the dynamics and stop ear fatigue. 0db is the threshold of hearing and is also threshold of clipping in digital.