Sudden Drop in Traffic

Hi!

I have a bussiness that sells products online and has an online store. However, this past month of june I had a decrease in traffic quite of a sudden, without changing anything SEO related, only changing some of the categories I had my products divided in.

Following the analysis from SemRush, I am not sure why this happened. The decrease is a 12% decrease, which is huge.

And I am also unsure as to how should I proceed. My idea is include more text inside my categories and products, so the SEO improves, and hopefully it will increase again the traffic. I was growing the precious months around 15-25% each month.

How can I search for the cause of this sudden change and what I could I do to improve my traffic?