Study (Levantine) Arabic with a linguist, using cutting edge learning and memorization techniques, and a sociolinguistics informed approach to language learning. I studied MSA for years, and this is what made me give it up -- now it's time to get back to it.
Amazon affiliate link to the textbook I'll be using (Routledge Colloquial Levantine Arabic): https://amzn.to/4cvExZ6