Found online:
Speaking of card games, men seemed to gather often because this was the way to socialize, not through Zoom calls and social media postings.
Based on the errors you’ve encountered so far in Bad Online English, what do you think might be wrong above? I see one thing.
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Remember the rule: hyphenate phrasal adjectives when they appear before the noun they modify: social-media postings. If you didn’t see this, punch yourself in the forehead until bloody. A little percussive maintenance ought to do the trick for your brain.
And no, there shouldn’t be a comma before because, so the above is correct.
Discussing because, as a subordinating conjunction, is a matter for another time.
I did not see it, but before I start head-bashing, I'll offer this in my defense:
In "social media postings", the hyphen is arguably unnecessary as "social media" is already well understood as a unit, but "media postings" is not, so it's doubtful anyone will think this means "a media posting that is social".
Then again, there is no harm in using the hyphen either. I bet I haven't convinced you. :)