I was in the overrated camp for a long Time. Took me years and numerous attempts too, also the poor quality versions that seemed to be on most streaming services didn't help. Glad I gave it another chance after running out of things during covid, it's the best series I've ever watched as a whole with the exception of maybe Sopranos.
Series 1 picks up after a few episodes as the story and characters develop. Season 2 actually dips in quality IMO but 3 to 5 are up there with the best TV you will ever watch. You will be fluent in Baltimorese by that point. I'm jealous of anyone who hasn't watched it now