Brother, I don't think you understand preterists.
They use literal interpretation and when they find a bump on the road they go with allegorical interpretation: they will answer you by telling you that the verse is allegorical just because.
If they lived during the times of David, after David's death, they would have told you that this part:
[Psa 16:10b NKJV] 10 ... Nor will You allow Your Holy One to see corruption. of the scripture must be allegorical because David died and they will find figurative use of "corruption" in other passages to prove their point, even though the passage in Psalms doesn't have any indication that the sentence is a figure of speech.
Thankfully, Peter interpreted that passage correctly, it was literal:
[
Act 13:35-37 NKJV] 35 "Therefore He also says in another [Psalm]: 'You will not allow Your Holy One to see corruption.' 36 "For David, after he had served his own generation by the will of God, fell asleep, was buried with his fathers, and saw corruption; 37 "but He whom God raised up saw no corruption.
Preterists have an issue with faith in the Scripture.
Or this scripture:
[
Mat 4:13-16 NKJV] 13 And leaving Nazareth, He came and dwelt in Capernaum, which is by the sea, in the regions of Zebulun and Naphtali, 14 that it might be fulfilled which was spoken by Isaiah the prophet, saying: 15 "The land of Zebulun and the land of Naphtali, [By] the way of the sea, beyond the Jordan, Galilee of the Gentiles: 16 The people who sat in darkness have seen a great light, And upon those who sat in the region and shadow of death Light has dawned."
They may tell you that that's an example why you need to use allegorical, but if you look closely, the people at that time, the original audience of it, could figure out that it was a figure of speech because Galilee had sunlight. They could see that "sat in darkness" and "shadow of death" is referring to their condition. So, after you translate the figure of speech part by the context, the fulfillment of the prophesy was literal, the actual event happened: the hope to their condition shined in the region as Matthew said it.
It is just common sense, obvious meaning, after you figure out the historical context and the grammar, so you could figure out what the original listeners understood (regardless whether they believed it, or whether they fully comprehended it). The Hebrews were not aliens, but regular human beings, and they use figure of speech as we do, and they figure it out by the context as we also do with modern writings. However, preterists will try to find a hidden allegorical meaning to things that don't fit their viewpoint. Preterists don't have a consistent way of interpreting the Scripture, they have a faith issue that needs to be solved first. Arguing will never end otherwise.