How can i focus the camera on an object i am working on,How to focus camera setting in unity on an object or assets in my scene

I am a complete beginner, and the camera setting of the engine is really a pain I can’t seem to focus it on an object in my scene, is there a way i can focus the camera on the object i am working on, pls this has really been giving me an headache all day,I am a complete beginner, and the camera setting of the engine is on really a pain I can’t seem to focus it on an object in my scene, is there a way i can focus the camera on the object i am working on, pls this has really been giving me an headache all day.

Double click on your object in the hierarchy should focus on it.
Hold alt and drag mouse to look around it.