GMAT Verbal Section | Studying Verbal as a Native Speaker?

Hey,
I'm on the same boat. Being a native speaker but still unable to get above V30... It really is disheartening considering I'm not amazingly good at Quant either.
What materials have you been using so far? Are you taking any prep classes? Have you take GMAT before?
I've been doing OG questions and GMAT prep. Also, really good/tough questions on this forum!
I've had people tell me that SC will really boost score, so I focused on that and can get about 80-90% correct and to be honest RC is
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