Just that it doesn't look like any of the 'aim' maps that you know (which don't deserve that prefix) doesn't mean it isn't mean for aim training. aim_shotgun for instance, or aim_m3_awp, is not about aiming! Those are about rushing and the lowest ping.
this is like of css on another map i created (updating now some) i put more objects with brekeables explodes like cs_compound cs_itlay and i download this titles frpm fps banana
There's a reason why the prefix of this map is aim_. Indeed, for many maps, large open spaces are bad. But since this map is created for aim training, you need open space.
As long as one puts a password on their server, to prevent noobs/people like you (I conclude from your hate for open spaces that you belong to the 'sprayer' kind of players), this map is actually perfect to train both one's aim and their ability to evade bullets.
Honestly, after playing this map a few times you'll be able to stay alive for a long time by simply evading all the enemies' bullets.
I also agree with TimeQuesT - put some domination points or flags in there and it'll be an ideal dom_/ctf_ map.