No, you can't. "Through/out of necessity" He only remained with the group through/out of necessity.

Excellent question! In this sentence it must be “I did it out of necessity” But you can use by in a phrase like “I was driven by necessity”. I think if it’s active it should be “out of” and passive sentences will us “by” Great question and a fabulous phrase, makes everything sound very sophisticated with collocations like this!

First sentence doesn't make sense to me. Second one is correct

They both have the same meaning however I've never really heard the first in use, the second one is more colloquial and what I would use.