Does AA cover substance abuse aswell?

Apologies if this seems like a very ignorant question, or something that could have been researched easily.

I am wondering if AA also covers substance abuse that coincides with alcohol consumption?

My local area doesn’t offer great coverage for either group, but AA seems to be more easily accessible.

Without going too much into my current situation, I just wondered wether it would be beneficial/appropriate to attend local AA meetings if I also have issues with substances that only really occur when I have been consuming alcohol?

This may seem vague as I don’t really know how yet to articulate my situation and relationship with alcohol etc. any advice would be much appreciated.

Edit - didn’t expect to get much feedback, but have had a few very informative and helpful comments in very little time. Thanks everyone. Will look into all of the advice and info given and will apply that to my journey going forward. What’s an awesome, supportive community. Thanks!