Souls in cthulhu mythos

the cthulhu mythos says that azathoth created this universe life etc unknowingly.Now the aliens are said to help life evolve on this planet.However I dont understand what is the purpose of souls of living beings in ctulhu universe?

did azathoth create souls?What is the purpose of the souls and their ultimate mission?

Souls I mean souls of living beings on earth

While I view cthulhu beings as nothing more than thoughtforms, there is a belief that souls here are in a constant state of evolution. However, not sure there’s a accurate purpose for a general consensus.