That is simply your assumption -- "not sacrificed". In real life a lone goat wandering in the wilderness will be dinner for the next predator which comes along. And lions were predators in the wilderness of Palestine.
In any event, you are denying the finished work of Christ on the Cross of Calvary, which is a very serious matter. More serious than a goat being gobbled up. And one of the major errors of the SDA Church is promoting the idea that the finished work of Christ is
unfinished.
THE BIBLE TRUTH
For such an high priest became us, who is holy, harmless, undefiled, separate from sinners, and made higher than the heavens; Who needeth not daily, as those high priests, to offer up sacrifice, first for his own sins, and then for the people's: for this he did once, when he offered up himself... And for this cause he is the mediator of the new testament [covenant], that by means of death, for the redemption of the transgressions that were under the first testament, [covenant] they which are called might receive the promise of eternal inheritance. (Heb 7:26,27; 9:15)
THE SDA ERROR
"But since the post-apostolic period, many Christian expositors have tried to identify it [the scapegoat] with Christ and His sacrificial death. Seventh-day Adventists have stressed a clear distinction between “the goats” of Leviticus 16:8, considering the one “for the Lord” as a type of Christ, and the one “for the scapegoat [Heb. Azazel]” as representing Satan. This is also the view expressed in Ellen White’s writings...
...The distinction becomes even more evident when she says that Jesus Himself, as our true High Priest, will confess the sins of God’s people “upon the head of the scape goat”; and that “while the plagues are falling the scape goat is being led away . . . into the land of forgetfulness.” In addition, the scapegoat’s “mighty struggle to escape” from his tragic exilic death avoids any identification of that goat with Christ. Even without mentioning Satan by name, it is more than evident that Ellen White had him in mind as the true scapegoat. "
The Scapegoat in the Writings of Ellen G. White
Anyone who knows anything about Satan from the Bible can see that it is
absurd to imagine that Satan would carry away the sins of any people into the wilderness, when he himself is the Arch-Sinner and the Arch-Enemy of God. And this is not the only error of the SDA Church.