I tried downloading 1.12.2 but the following massage shows up: Failed to download file. ar_sa.lang Im on mac so ByteFence etc. is not the problem can anybody help?

We are unable to diagnose your issue due to the lack of proper debug information. Please review the guidelines before reporting issues.
In case of a game crash, please also attach the crash log from [minecraft/crash-reports/crash-<DATE>-client.txt|http://hopper.minecraft.net/help/guides/finding-minecraft-data-folder/].

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Duplicate of MCL-5546, please follow the steps described there.

I dont think its a duplicate since i already came across that one, but there is nothing that can help me, i have a Mac and none of the programes listed are installed on my mac

In that case, please use the 💬 Community Support.

Nobody could help me there :/