我试过销声匿迹最终也无人问津
[wŏ shì guò xiāo shēng nì jī zuì zhōng yĕ wú rén wèn jīn]
I’ve gone missing and still no one cared means one has intentionally disappeared (or cut ties/contacts). Even doing this has drawn no significant attention from others showing a sense of loneliness and abandonment.