I'm currently reading Peter H Wilson's account of the thirty years war, and he mentioned the German novel Simplicius as a ground eyes view of the war, my question is do we have an non soldiers account of what life was like from a lower class view?
Excellent question!
Once you've finished reading Wilson's famous work, I suggest trying Medick and Marschke's Experiencing the Thirty Years War A Brief History with Documents, which has excerpts from several contemporary chronicles and broadsheets.
Although relatively few have survived, there are several accounts in the form of memoirs or abreviated diaries, by common men who lived through the 30 Years War (TYW).
Peter Hagendorf was a common mercenary solider who spent much of the war fighting under the command of Pappenheim. His diary covering the years 1625-1649 was discovered in a manuscript collection in 1992, and several articles and diserations have been written verifying his accounts as essentially correct. , Most of the scholarship on this subject is published in German by academics at German universities, as you might imagine. An complete transcription of Hagendorf's diary was republished in recently as "Ein Sölddernleben im Dreißssigjährigen Kreig" (A Mercenary's Life in the Thirty Years War). I don't think an English translation exists, although translated excerpts had been republished in Tryntje Helfferich's The Thirty Years War: A Documentary History.
But you asked about the accounts of commoners who weren't soldiers, and a few of those exist as well. In Helfferich's book is also excerpted the diary of Hans Heberle, a shoemaker from near Ulm. He kept a sort of diary of current events, a Zietregister, which can be found a more complete translation here in English: http://germanhistorydocs.ghi-dc.org/sub_document.cfm?document_id=3709
Only a few fragmentary accounts survived of women's experiences during the war, mostly letters to husbands and "boyfriends". These letters suggest that at least during the early stages of the war (pre-1630-ish), civilian populations in major cities remained largely unmolested. I honestly don't know that much about this, but I suspect that our very own /u/sunagainstgold mayhave something to say about this. There's supposed to be a big volume on women's lives in the Thirty Years War coming out by UC Press "soon", but you didn't hear that from me.