I need help with my Audio

There is 6dB headroom on that, (i.e. it can be amplified by 6dB).
When you make a YouTube, 1dB headroom is plenty, (6dB headroom means it will be quiet compared with other videos).

My suggested workflow …
#1. Amplify to 0dB
amplify to 0dB.png
#2. Apply limiter with these settings - twice.
Audacity Soft limiter (apply twice).png
#3. Then use Paul-L’s DeClicker on default settings
#4. Optional De-Ess , e.g. using Spitfish plugin.