lose face in English:

I'm too ashamed.

Our firm is on the verge of bankruptcy, I'm ashamed to say.

I'm ashamed to tell such a muddled story in this dreary, rainy season, but please bear with me for a while.

It can hardly be called research... just an amateur's hobby, I'm ashamed to say.

I'm not even capable of pinpointing Germany on a map! I'm ashamed!

Here lies one who meant well, tried a little, failed much: — surely that may be his epitaph of which he need not be ashamed.

I've never been more ashamed. / I felt ashamed and went to bed.

He tried to control her, and then he felt ashamed of himself

They are the things you get ashamed of, because words make them smaller.

I can’t believe that you’ve done such a terrible thing! I’m ashamed of you!

Later, Chris felt ashamed and apologized and Beth forgave him.

Out of a sense of justice, I said to the leader of the biker gang: "What you are doing is a crime! Be ashamed of yourselves!".

His appearance and behavior made me ashamed of him.

I'd like Quim Monzo to autograph my book, but I'm too ashamed to ask him.

She felt so humiliated that she couldn't say anything.

To lose face means to be humiliated.

She was humiliated by him.

At the party, one of his political opponents humiliated him in the presence of many guests.

Tom felt humiliated.

Tom was humiliated by Mary.

I was never so humiliated in my life.

He felt utterly humiliated.

I've never felt so humiliated in my life.

She failed and felt humiliated.

The boy was not humiliated by the laughter of his classmates.