Hello everyone , being the origin of the Arabs is in modern day South Syria , Jordan and North Saudia Arabia asks me what languages were spoken in the " Arab peninsula " before the expansion of Arabic language
Northwestern and Western Saudi Arabia : Central Semitic languages like Dadanitic , Taymanitic, and Thamudic were spoken here which could be Arab
https://en.wikipedia.org/wiki/Dadanitic
https://en.wikipedia.org/wiki/Taymanitic
https://en.wikipedia.org/wiki/Thamudic
South Saudi Arabia , Yemen and Oman : South Semitic Languages such as Minean , Sabaean and Harsusi languages were spoken here
https://en.wikipedia.org/wiki/South_Semitic_languages
Eastern Saudi Arabia,: United Arab Emirates , Kuwait , Qatar and Bahrain : Eastern Saudi Arabia , Kuwait , Qatar and Bahrain were part of Dilmun which is considered to be Eastern Semitic speaking with a language similar to Akkadian, while I did not find what language was spoken in Magan in the United Arab Emirates
Center Saudi Arabia : Being a mostly arid area, I did not find a language or kingdom that lasted long, except for one or another writing from Central Semitic Languages, mostly Arabic.