IF IT WERE NOT FOR – English Grammar Profiler
In the English Grammar Profile, C2 point 125 in CLAUSES/conditional is defined as
‘If it weren’t / were not for’ + noun phrase to introduce conditions in formal contexts. past simple
For example:
And none of us would be here if it weren’t for you.
iWeb doesn’t allow a search for **** to the right even on a premium licence.
1 IF IT WEREN’T FOR 9682
2 IF IT WERE NOT FOR 4645
A collocate search in THE MOVIE CORPUS:

1 N’T 865
2 FACT 19 3 MEDDLING 17
4 ALIVE 13
He‘d be alive if it weren’t for you.
Complicity
5 EXIST 6 6 MESS 6
7 FAULT 5
COCA does allow for long searches:
1 IF IT WERE NOT FOR THE FACT 18