Perhaps the reason why we don’t read much about multiple lifetimes in the scriptures is that given the Hebrew concept of time, to them, it was a given, and doesn’t need to be mentioned. The Hebrew concept of time is circular, not linear.
For he that diligently seeketh shall find; and the mysteries of God shall be unfolded unto them, by the power of the Holy Ghost, as well in these times as in times of old, and as well in times of old as in times to come; wherefore, the course of the Lord is one eternal round. (1 Nephi 10:19)
For a discussion of the Hebrew concept of time, see: https://www.ancient-hebrew.org/emails/concepts-in-time.htm I strongly recommend you read this before continuing. It is a short article, well-illustrated with diagrams and example. It was written by Jeff Benner, a man who teaches the elements and principles of the Hebrew language to westerners. I strongly recommend all of his articles because understanding the concepts behind the Hebrew language gives you a better idea of the Gospel, and uncovers many mysteries for you.
Samuel the Lamanite:
Helaman 13:38 But behold, your days of probation are past; ye have procrastinated the day of your salvation until it is everlastingly too late, and your destruction is made sure; yea, for ye have sought all the days of your lives for that which ye could not obtain; and ye have sought for happiness in doing iniquity, which thing is contrary to the nature of that righteousness which is in our great and Eternal Head.
Alma 42:6 But behold, it was appointed unto man to die [to keep on dying] –therefore, as they were cut off from the tree of life they should be cut off from the face of the earth–and man became lost forever, yea, they became fallen man.
Alma 40:8 Now whether there is more than one time appointed for men to rise it mattereth not; for all do not die at once, and this mattereth not; all is as one day with God, and time only is measured unto men.
2 Nephi 30:8 And it shall come to pass that the Lord God shall commence his work among all nations, kindreds, tongues, and people, to bring about the restoration of his people upon the earth.
I want to reason more on the spirit of man; for I am dwelling on the body and spirit of man—on the subject of the dead. I take my ring from my finger and liken it unto the mind of man—the immortal part, because it had no beginning. Suppose you cut it in two; then it has a beginning and an end; but join it again, and it continues one eternal round. So with the spirit of man. As the Lord liveth, if it had a beginning, it will have an end. All the fools and learned and wise men from the beginning of creation, who say that the spirit of man had a beginning, prove that it must have an end; and if that doctrine is true, then the doctrine of annihilation would be true. But if I am right, I might with boldness proclaim from the house-tops that God never had the power to create the spirit of man at all. God himself could not create himself. (King Follett Address)
This is a key principle to keep in mind. If something had a beginning, it will have an end. If something has no beginning, it will have no end. In order to understand the circular notion of time in terms of our linear notion of time, we would have to do what Joseph Smith did: take a ring and cut it: i.e., to pick some arbitrary point and call it the beginning. Genesis 1:1 says “In the beginning God created the heaven and the earth.” But the word beginning means “main” or “chief” and derives from the word for “head”. Moses asked God to show him how all these things came to be. Moses, though a Hebrew, was raised as an Egyptian and likely was raised to view time in linear fashion.
Mos 1:35 But only an account of this earth, and the inhabitants thereof, give I unto you. For behold, there are many worlds that have passed away by the word of my power. And there are many that now stand, and innumerable are they unto man; but all things are numbered unto me, for they are mine and I know them.
Mos 1:38 And as one earth shall pass away, and the heavens thereof even so shall another come, and there is no end to my works, neither to my words.
[The work of God is endless, and proceeds in cycles of creation, sustainment, and destruction. I heard some general authority say in conference that, as a god, we will experience “endless creation”. I’m not so sure God and Moses agree with this.]
Mos 1:40 And now, Moses, my son, I will speak unto thee concerning this earth upon which thou standest; and thou shalt write the things which I shall speak. [God cut the ring for Moses. In giving an account only of this earth, He began with “in the beginning”, or, in other words, “Moses, this is the first and most important thing to know”.]