Advertising ACOS Doubled, Overall Sales Slump

Recently, I have encountered a challenging situation with my Amazon advertising campaigns. The ACOS has unexpectedly doubled, significantly impacting my profitability. At the same time, the total sales volume has been underwhelming, further exacerbating the issue.

I am reaching out to this community in hopes of gaining insights and advice on how to navigate through this difficult period. Has anyone else experienced a similar situation? What strategies or adjustments did you implement to overcome it?