Paul L wrote some plugins.
https://forum.audacityteam.org/t/updated-de-clicker-and-new-de-esser-for-speech/34283/1
You may not like most De-Essers. They try to take the sound apart and only compress or reduce the “essy” bits.
I think the Low Pass filters sound the best. They can gracefully push down the harsh, crisp, gritty sound to match what would happen had you been shooting with a Dynamic (moving coil) microphone all along.
The latest postings from ACX actually recommends dynamic microphones instead of condenser types.
I posted a “wool blanket” filter (throw a wool blanket over your microphone), and any minute now I’m going to find it…
Koz