Great movie but contains suspicious parts and lower the expectation

Rating: 5/10 (2 May 2019)

After watching the movie, it's just lowered my expectation, after watching the infinity war I was really expected how the avengers beat 'Thanos' , the first part of the movie I was really expected, it's great Thor cut the Thanos ' head off, after that I just felt bored at the first hour of the movie, just waste of time, second hour they're just simply talking about ' Time Machine ' named ' Time Heist ' how to go back to the past to change the past and bring the past characters to the present , how could that possible, well it's fine otherwise they cannot let the forms of life come back, including most of avengers like spider man, doctor strange, black panther, guardian of galaxy and others, no other way to get it back, it's creative to go back to the past and bring the past to the present !
The first suspicious part is how did the 2014 Nebula opened this ' Time Heist ' Gate let the thanos large ship go through the gate to the present seems super impossible for that, you have to wear a suit and need the red medicine for going back to the present, that's ridiculous.......
Second suspicious part how could the thanos become stronger without wearing the 6 stones glove , in infinity war thanos wasn't that strong even wearing that glove, seems it doesn't make sense for that, 'Captain Marvel' seems not super useful in the movie, she was the strongest in 'Captain Marvel 'movie , here she just destroyed the Thanos ship that's all........ supposed to kill Thanos right away..... just trying to stop flipping one finger , after that she was just hit to nowhere...... such a strongest hero in avengers, but here was just too terrible..... seems useless, the iron man 's passed away at the end makes me feel touching, he's a superhero, he took 6 stones from Thanos, and Flipped the fingers for Thanos let Thanos and his teams become dust and save the world! But was bit pitiful for 'Tony Stark ' for the character in Avengers! Natasha and Vision too !
Third suspicious is how could Captain America take Thor 's great hammer, super confused here, and Thor said: I just know..... the movie didn't mention how could Captain America could take the Thor Hammer .....
seems I missed a Marvel Movie.....
It's a great movie but suspicious parts made me lowered my expectation for the 'Endgame '!!! The 10 score guess just for the sponsors!!!