Is there a way to find out why my subreddit's growth had a sudden nerf from Reddit's algorithm?

(On Desktop) My subreddit r/ProgressiveHQ had some really good growth and engagement and for some reason on January 26th it suddenly dropped down to 10% of what it was at prior without any clear reason. I wonder if there's some setting I can enable or change or something that will put it back to where it was.

https://i.imgur.com/gBXkw0q.png