Recommendation für Wifi-AP

Hello together,

I am looking for a new wifi-ap. The AP will be mounted in the attic on a outer wall.
It should send trough the wall to the garden.
I want a AP from Unifi, because the whole network is unifi-based.

The normal APs are sending in a sphere. Is there a AP which is sending eg. only a 90° cone.
There is already a AP in the attic which supplies wifi for the floor underneath. But it is not strong enough for the garden.

Didnt found anything on the unifi webpage.