Audacity does have “clip fix” to reconstruct the flattened peaks and troughs of an over-amplified sound.
https://forum.audacityteam.org/t/clipfix-see-waveform-pic-plugins-available/4171/1
BTW it is possible to attach a few (10?) seconds of audio (e.g. WAV or mp3) to a post here if you put it in a ZIP file.
If you posted a bit of your wedding audio people here may be suggest treatments, or tell you if the patient is terminal.