History A Level Essay help

Yes, I would probably do this thematically. I don't study Germany (I did Russia) but for example I would have done a paragraph on education, a paragraph on women and a paragraph on healthcare/social benefits at work. Maybe housing.

With regards to having positives and negatives in one paragraph, I don't see any problem with that. If anything, it makes you seem more evaluative if you come to a mini-judgement within each paragraph. I think the big thing is to very clearly define your overall argument in the introduction and conclusion, and keep weaving it through. Eg at the end of an education paragraph you could say "although the lives of the people were improved through a broader, more effective education system, this progress was overall outweighed by other social failures such as the inability of the government to promote and achieve gender equality" which would link you onto a new paragraph