Can I ask about a collocation of words, please?
I wonder if I can use "get across" and "what I said"?
like this: I couldn't get across what I said.
I also want to ask about "make ... understood" and "my idea / thoughts / message"
Can I say like this?: "I couldn't make my idea understood."
"I couldn't make them get across what I said."
As for the second sentence, yes, you can say "I couldn't make my idea understood"