I'm learning German by myself and the conjunctions are started to make me crazy, therefore I can't understand why the grammar of the sentence is totally different when we use conjunction?

And,

Are these sentences mean exactly the same or not?

1.Wir mögen sie , Weil sie magt uns

2.Weil er uns mag, mögen wir ihn.

I'm learning German by myself and the conjunctions started to make me crazy, therefore I can't understand why the grammar of the sentence is totally different when we use conjunctions.

And, do these sentences mean exactly the same or not?

1. Wir mögen sie, weil sie magt uns.
2. Weil er uns mag, mögen wir ihn.