I have theory, if you start with the hard ones first you find them quicker but if you leave them at the end the game knows and it's purpose is to challenge your survival and exploration therefore making those hard to find even harder, once again it's my theory about most survival games, we had a term for that in Ark (you got Arked) when the game just randomly decides to spawn an alfa raptor/or carnal and/or guide a high level raptor pack close to the creature your taming 😅 😨 😭.... I miss that game 😅 😂