الخطا فين:' As a whole, I am very happy here.

عموما /علي وجه العموم on the whole

اليك منى كل احترام وتقدير
On the whole, I am very happy here.
as a whole = considered as a single body or unit: 'The country as a
whole is not ready for another election.'
on the whole = generally speaking: 'On the whole, I can see no reason
why you shouldn't apply.'