AVENGERS 4: Endgame Trailer (2019) released with many questions

Avengers 4 and game trailer has arrived now. Previous month Russo brothers take about Avenger 4 endGame Trailer. 

After the snap of thanos everything lost Avengers. As like avengers Infinity war Marvel President Kevin Feige, also make a false alarm about the date of Avenger 4 endgame.
In the trailer iron man was still on the Titan talking with himself. As the Black Widow say

Thanos did exactly he do and wiped out 50% of entire living creature. 

In the trailer it was seems like avengers was no more and they were not working together to fight with enemies.

In Trailer you can see hawkeye to fight with bad guys and killing brutally.But here are some questions what was do after avengers Infinity war

• How did ant man get out of quantum realm after thanos snap?
• Why the tailor did not come with more feature and excitement ?
• Why Marvel title his new movie with Marvel Studios Avenger with no information ahead?

After watching this trailer you can probably thought Russo brothers are trolling us

The tradition continues... #AvengersEndGame pic.twitter.com/mdiWf0jpZF

— MCU News & Tweets (@MCU_Tweets) December 7, 2018