For when biblebud wakes up, I found an interesting document detailing various groups' perspectives on Replacement Theology and Supersessionism here:
https://www.researchgate.net/publication/374756450_Denominational_Responses_to_Replacement_Theology_A_Cross-Sectional_ExaminationPicrel, in my own case. I'm still researching the topic, but as I understand it thus far, the proper framework for proper exegesis and eschatalogical understanding is that while the Old Testament covenants are still unconditionally binding on the physical descendants of Abraham, Isaac and Israel (with the exception of the Mosaic Covenant, which was fulfilled and then replaced with the New Covenant of the Eucharist), the Church is also simultaneously the spiritual continuation of Israel, the inheritors of salvation, and "Abraham's seed" by faith. As such, we shouldn't support Christian Zionism nor see the modern state of "Israel" as a fulfillment of covenental promises nor of prophecy, because a) what we today recognize as the modern ethnic Jews and the secular liberal democracy ethnostate, are not synonymous with the genealogical descendants of Abraham nor the Davidic Kingdom, due to the dispersal by Hadrian resulting in massive, widespread admixture throughout the Old World - meaning "Israel" today would consist of all sorts of peoples, largely those *outside* (((the tribe)))
ironically, including both the Palestinians as well as many 99.9% pure-blooded Europeans, but excluding many Khazars, Ashkenazim, etc., but also because b) that new, multiracial nation of Israel has to return to the Lord (in the modern day, this means embracing Christ) FIRST, before He restores them to the land of their ancestors (refer to Deuteronomy 29-30).
All this to say - let this understanding serve as an exegetical background to harmonize passages which would otherwise seem confusing or incompatible on the surface, and also to guard you against subversion by the neo-Darbyite golems.
Some relevant biblical passages, both that you have already read and which you will be reading in the future:
https://www.biblegateway.com/passage/?search=Deuteronomy%2030&version=NIVhttps://www.biblegateway.com/passage/?search=Romans%2011&version=MEVhttps://www.biblegateway.com/passage/?search=Galatians%203&version=MEV 
