Native Audacity cannot reduce reverberation from the room,
nor reduce background noise which changes with time, (e.g. road traffic).
Adobe’s (currently free) online AI service “Podcast Enhance” can make those corrections … Enhance Speech from Adobe | Free AI filter for cleaning up spoken audio
https ://manual.audacityteam.org/man/bass_and_treble.html
If you don’t like the AI result, the main fixable issue in Audacity is excessive sibilance,
fixable with a de-esser plugin like desibilator.