I did a DNA test on MyHeritage, in the list of DNA matches only people from my father's side appear, a maternal cousin has no DNA in common with me, the result came out yesterday, at GEDmatch it also says that we don't have DNA in common, cousins ​​from my Father's side they have and strange that they appear cousins ​​on the side of my Father's 1st wife.

As a woman, did an autosomal test on MyHeritage how far can I know my true identity?

For it seems that my Mother is not my biological Mother, so says my DNA test, but I am my Father's Family.