I'm not going to try to persuade you that Justice League was a good movie . Indeed, my impression of it as I came out of the theater was, "Wow, that didn't suck nearly as hard as I expected." The only reason I paid to see it was because Wonder Woman was above average and I wanted to see what they could salvage from the reshoots without Snyder(sympathies to the family but the man doesn't grok the genre).
Justice League was not a masterpiece by any means. The constant flexing and posing, the annoying Flash and the CGI Villain were all just bad but there was some decent characterization and while the plan to bring back Superman was forced( When are they going to station some security inside that alien spaceship site?), it was decently executed. Batman was redeemed from the murderous lunatic of BvS and the post-credit scene was nice.
That's why I said that the new trailers gave me hope. They are different in tone(and color palette) from the previous DCEU , so maybe they are starting to get the hang of it. I'll probably see Aquaman but if it disappoints then Shazam will be a wait for cable movie for me. And any subsequent DECU movie will have to preceded by either fantastic word of mouth or reviews from people I trust before I venture to the theaters(with a possible exception for WW 2).