>>716501927
Most fantasy races are just humans with an altered appearance. Elves are humans with big ears. Dwarves are humans but short. Goblins are humans but short and green.
To actually come up with new races who have unique anatomy, behavior, and cognition all while trying to build societies and cultures around them takes immense amounts of time. It's easier to just copy and paste human behavior onto the recycled fantasy races you mentioned.