It was an interesting time, especially when you also factor in the Icelandic reformation and the first translation of the Bible into Icelandic and the witch trials in Kirkjuból.
The specific publication I am talking about is not the Galdrabok, but another manuscript of healing and charms that would be more reflective of low magic. It was only recently translated into English as "Norse Magical and Herbal Healing" in 2011 by the illustrious and amazing Ben Waggoner. (I am required to engage in puffery when speaking of my beloved kindred brother.) His research (which is summarized in his 40 placed introduction) has information on more low magic that does sometimes include the runes along with prayers to angels. It's actually a really good read if you have interest in herbs, medicine, or low magic from that era.
Also Norse Magic and Herbal Healing which is a translation of a post Christian Manuscript by Ben Waggoner, and recommended by me
Norse Magical and Herbal Healing https://www.amazon.com/dp/0578092700/ref=cm_sw_r_cp_apa_i_ACTaBbWFA36Y4