How to say I want to leave colloquially? How to say I want to leave or I want to go home colloquially in the case of we are visiting someone's place?

Let's say I'm visiting my auntie, then when it's the time for me to leave, what should I say to her?

Is it ok to say "姑姑，我先走啊" ?

But I feel 先走 sounds awkward. Is there better colloquial alternative words?
我先走了 is a perfect way to say.
you can also say,我得(děi)走了; 我要走了;我得(děi)回家了;我还有点事,先走了; 好了,我得(děi)走了;不早了,我先走了;行,我先回去了;