据报道，错失恐惧症是一个严重的问题，它会让你感到沮丧、孤独和无聊。

It is reported that FOMO is a serious problem, which can make you feel upset, lonely and bored.

youdao

我不想让你感到沮丧，然后无法展示你所知道的，所以这里有一些建议。

I don't want you to get all frustrated and fail to show what you know, so here are a couple of tips.

youdao

因为我你感到沮丧和失望。

You feel let down and disappointed by me again.

youdao

when you feel upset or when you feel frustrated that something is not going the way that you wish it would.

当你觉得很失落，或者当你因为事情不像你期望的那样进展而感到沮丧时，你也可以使用这个句型。

I'm frustrated 课堂 - SpeakingMax英语口语达人

But you probably should use often because hey, who doesn't get frustrated?

但你也许该多多运用它，因为毕竟，谁不会感到沮丧呢？

I'm frustrated 课堂 - SpeakingMax英语口语达人