བོད་རྒྱལ་ལོ།
This passage is interesting but the description of the alayavijnana here is not super clear. It seems like it’s describing the stream of cognition within the form realm, which consists of the six vijnanas. It’s not clear from this description how the two appropriations happen, nor at what point exactly the alayavijnana arises.
It’s really common to struggle with accepting the teaching of rebirth. However, the sutras are clear that rebirth is literal. Buddhism is not a tradition of free thought and scientific empiricism; it is a tradition of faith, magic, and mysticism.