Another option:
I can't deal with it.

Cope - если эмоционально.

Почему, Александр?

Так Ули недавно пояснил.

Yes, CAN’T COPE means that you don’t have the emotional wherewithal to deal with something.

Remember Jesus Christ Superstar, I Don't Know How to Love Him:

Yet, if he said he loved me,
I'd be lost, I'd be frightened.
I couldn't cope, just couldn't cope.
I'd turn my head. I'd back away.
I wouldn't want to know.
He scares me so.
I want him so.
I love him so.

Songwriters: Andrew Lloyd Webber / Tim Rice
I Don't Know How to Love Him lyrics © Universal Music Publishing Group

I love that song!

Elena, “I can’t manage it” sounds like you can’t run a business. It’s a shame - sounds too weak; it’s something you say when things don’t work out, not when you’re genuinely sorry about something: “What a shame you’re parents couldn’t come - maybe next time.”

Wherewithal - an interesting word. Got it 👍

Yeah, it’s a pretty cool word)))

Oh, I'm deleting it and it's high time I went to bed 🙏

Good night! I’m traveling to New Orleans tomorrow, so I have to get to bed early too.

Thank you! Have a good trip 🙋