Why are there no human apes alive today ?

If humans really did evolve from human apes then why are there no human apes alive today ( or well atleast no known) ?How come the chimpanzees and the orangutangs and the gorillas survived untill this day practically staying the same shape ( I havent got any information about the monkeys evolution in the past) While more advanced forms of semi humans died out ore evolved ?I mean. There is only 1 species of humans today. I can get kids with anyone of the races i would like but there is really only one known. I think it doesen't make sence at all.How would the primitive apes have survied along side with the most advanced form of humans. While all the semi humans died out ?