The socioeconomic policies of Assad jr. represented by the austerity measures and the espousal of neoliberalism is what led, to a great extent, to the uprising in the first place. I don’t have book recommendations, but I did find two interesting articles from a Marxist/leftist POV that discuss this exact matter, and which include a rich bibliography and citations that you can look through.
https://aljumhuriya.net/en/2017/09/21/socio-economic-roots-syrias-uprising/
https://www.rosalux.de/en/publication/id/39149/syria-the-social-origins-of-the-uprising
“We are not the same”