Walking around here looking for something

来回徘徊寻觅着爱的影踪

Look for寻找（某人或某物）；<口>找（麻烦）； 找（苦头）吃； 希望得到

例句：

We look for applicants who are numerate, computer-literate and energetic self-starters.

我们对求职者的要求是具备运算能力，熟练使用电脑，精力充沛而且工作积极主动。

They look for foods that are low in calories.

他们要找低卡路里的食物。

We all need to look for ways to reduce our carbon footprint.

我们都需要寻求降低碳排放量的方法。

I'd sweep you off your feet when you will fall apart

我可以在你支离破碎时救你于水火

fall apart散开，崩溃，破碎； 圮； 散架；

例句：

Sometimes things have to fall apart to make way for better things.

有时候要到达谷底，才会慢慢变好。

I'm trying to be more centred, and not fall apart when I go through difficult things.

在我经历艰难困苦之时，我努力让自己保持镇定自若，不要崩溃。

Many of these guys fall apart when they retire.

这些人有许多一退休身体就垮了.

Tryna see your eyes, oh, make me warm again

想看看你的眼睛那会让我再次温暖

Tryna这是英语口语化的表现tryna,wanna都是try to want to的口语化,只是前者读起来简单顺口;相似的还有shoulda,gona.