We are supposed to work together, not just you help me
手伝うよ - ill help you, ill help
じゃなくて、ではなく - not 〜〜
手伝うじゃなくて - not “help” , not “helping”
あなたもメイン - youre also main, we are main, we are team
メインでやるんだよ - we should do together, we should do as main
We are supposed to work together
二人で一緒にやらないと
Not just you help me
私に手伝うだけじゃなくて
イギリス 
