Can you please tell and explain to me deeply who is yahweh. Is yahweh same as Allah? Why is it that Yahweh is a proper name while Allah is more general name? And also if Yahweh and Allah is the same, can we adress Allah swt as Yahweh?

The proper name of God is Allah and this is how He is named in the Quran. So we should stick to what names He has used for himself.