The most common and most likely answer to this crossword clue is the 4 plus 3 plus 2 letter word HAVE HAD IT
H
A
V
E
H
A
D
I
T
Buddy explains!
The straight part
We know that "Tried that/am fed up/won’t survive" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case tried that/am fed up/won’t survive = have had it.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.