Welcome to TFP!
First thing's first, what you attempted is called the "slug method" and it is 100% bunk. Dumping a bunch of acid in the deep end does not lower TA any more than properly pouring it in front of the return but it absolutely will damage your pool. Never pour MA in a pool with the pump off.
TA is a pretty unconcerning level, there's really no reason to chase it just because it is 'high'. Just managing your pH as normal will almost always bring the TA to a spot where it keeps the pH stable. Also, as Jim pointed out, it's not the cause of water cloudiness. I know this especially because the same thing brought me here all those years ago. And trust me, it wasn't acid that cleared up the cloudiness, it was chlorine.