So Marvel is doing it wrong with the current phase of the MCU?

You mean cause of Spiderman and Black panther?

Thing is, people were not attached to those characters, but they were for Iron man, captain america, ant-man, etc. wich was why they went to watch the movie.

Currently we only have an origin story for wonder-woman, wich was quite decent, so audiences have some attachment to her now. But you need more than that.

Like i think you are confusing introducing new characters when you already have an established cast of characters to not having an established cast of characters and still introducing more. The ratio of screentime per character is alot smaller in the second case, so naturally people aren't going to care as much.

Btw i am talking about movie audiences. Don't mix it up with comic stuff.

Also, Man of Steel. 

Let's look at Gurdians of the Galaxy then - people didn't care about the characters because the characters were not established?

The thing with Guardians of the Galaxy is that they were given their own movie, (2 of them now) where they got the entire spotlight with little to no mention of any of the other characters in the MCU. No Stark. No Cap. No Thor. No Banner. No Black Widow. No Hawkeye. Nothing. So even though they were never introduced before and thus people didn't have a reason to care to begin with, they quickly did come to care because they were introduced on their own instead of being shoehorned into the middle of the plot of an entirely different film for the sake of rushing them into the universe to get to the big crossover main superhero title as fast as possible. It doesn't tie into anything except for the end credits seen at the end of the first Avenger's film which introduced Thanos. Now, when the Guardians actually do appear alongside the others in Infinity War to fight him, it actually means something.

It's not that you can't introduce new characters in a team-up movie, it's that you can't introduce half the team and expect people to be invested.

This movie is dealing with Aquaman, Cyborg and Flash like we were already familiar with them, when we're not.

As for Spider-man and Black Panther: Spidey already had a vast media presence, justifying the hype in trailers, and even so its young kid in above his head story was understandable to newcomers.

Black Panther had more cult appeal, and his vengeful wild card story was still appealing to newcomers.

The marketing for Civil War was selling those characters' presence, while Justice League is trying to sell the team, which doesn't work because we don't know the characters!

This might very well change in the movie, but as a marketing strategy it leaves everyone who isn't a "true believer" cold.

While I think we can all agree that WB have rushed into Justice League, and they could have handled it much better, lets not pretend that the League needs major introductions. Everybody knows Batman, and what he's about. Everybody knows Superman, and what he's about. Wonder Woman is the biggest female superhero there is, and they've already shown that they can nail her. Flash is incredibly popular, and currently has a very succesful TV show. The only two you need to get people to really invest in, are Aquaman, and Cyborg. In both cases, I would argue that it's easier to get people hyped for them in a Justice League movie than on their own. The non Aquaman fans think of him as pretty much a loser who talks to fish and not much else, they wouldn't be very interested in checking out material related soley to him, but you introduce him in JL, as some kind of badass (which they're doing very well), and suddenly everybody loves Aquaman (seriously, he looks like he might steal the show). And Cyborg.....meh.....he seems like a Hulk type to me, an all CGI dude, best left within the confines of a group he can play off, rather than trying to make him the star of his own show.

how do u knot now ist alctually supagirl lmao

It should be noted that Zack Snyder did not direct or write Suicide Squad. He did on the other hand, write Wonder Woman, which has been received well.

Also, Batman vs Superman had an average/mediocre theatrical edition, whereas the ultimate cut was actually good (keyword: good. It wasn't amazing which was/is unfortunate). The theatrical cut created many plotholes and pacing issues that were resolved in the ultimate cut.

The ultimate cut is what I saw of Batman vs Superman. It's still a nonsensical piece of shit film. It didn't get average reviews. It had like a 30% on meta when it released in theaters.

Looks like it could be good, the trailer was good at least, but I still think DC's rush for their own team-up film like Justice League before even giving most of the characters their own solo films first is dumb though, because I would think that part of the reason the first Avengers worked so well was because it gave people time to get to know the MCU's versions of the characters and actually care about seeing them interact with each other.

I still haven't fully seen any of the DCEU movies yet though.