The above linked article tells about the top 20 best selling books in 2019. I am not surprised that Where the Crawdads Sing was #1, just judging by how many people talk about the book.
Top 20
1.Where the Crawdads Sing by Delia Owens
2.Becoming by Michelle Obama
3.Dog Man: Brawl of the Wild by Dav Pilkey
4.Girl, Stop Apologizing by Rachel Hollis
5.Diary of An Awesome Friendly Kid by Jeff Kinney
6.Girl, Wash Your Face by Rachel Hollis
7.Oh, the Places You’ll Go! by Dr Seuss
8.Educated by Tara Westover
9.The Tattooist of Auschwitz (Paperbacks) by Heather Morris
10.The Wonky Donkey (Paperbacks) by Craig Smith
11.Unfreedom of the Press by Mark R. Levin
12.Howard Stern Comes Again by Howard Stern
13.You Are a Badass by Jen Sincero
14.The Mueller Report by the Washington Post
15.Green Eggs and Ham by Dr. Seuss
16.StrengthsFinder 2.0 by Tom Rath
17.It’s Not Supposed to To Be This Way by Lysa Terkeurst
18.The Meltdown by Jeff Kinney
19.The Woman In the Window by A. J. Finn
20.The Life-changing Magic of Tidying Up by Marie Kondo