For those that wondered where Gamora was at the end of Endgame, this scene helps answer that question. No, she didn't fade away with Thanos, but she has disappeared for the time being. Let's assume
Gamora survived Tony's snap because she had changed allegiances when it happened. The stones can interpret the users' intentions, and Tony only snaps Thanos' invading forces. Nebula had already convinced Gamora that Thanos was in the wrong by this point, so the soul stone likely sensed that she was no longer a threat.
2014 Gamora: The Gamora who traveled with Thanos from 2014 to 2023 helps defeat her father. When Tony snaps his fingers at the end of that battle, Thanos and all his henchman disappear. Since Gamora fought alongside the good guys, she presumably survived. But it's unclear where she is at the end of the film.
Why wasn't Gamora at Tony Stark's funeral? Gamora's absence from Tony Stark's funeral in Avengers: Endgame can be attributed to a simple fact: there was no reason for her to be there. The Gamora we saw in the Guardians of the Galaxy movies and Infinity War is dead and never met Tony.
After learning about the price he has to pay to fulfill his goal, Thanos starts crying and eventually throws Gamora off a cliff. Thanos thinks of Gamora as his true child, and by killing her, the Mad Titan is sacrificing everything he loves to fulfill his duty. And just like that, Gamora meets a devastating death.
Vision wasn't made in 2014, which is when Nat, Clint, Nebula, and Rhodes went. It's the same reason why Heimdall, Loki and Gamora also didn't came back by Hulk's snap! They died in Infinity War but not got snapped out of existence...
"When Gamora went off that cliff, the Gamora from that time period died. But this is the Gamora from prior to that. So she's still alive, she traveled in the time machine to the present.
The answer is Harley Keener, played by Ty Simpkins. Harley is the kid from Iron Man 3, the one who helped Tony when Iron Man crash-landed in Tennessee. That movie took place in 2013, and remember, the funeral happens around 2023 because of the five-year time jump. That explains why Simpkins is barely recognizable.
Mysteries unraveled: That unknown kid at Tony Stark's funeral. The kid in question was none other than Harley Keener, the kid from Iron Man 3. If you pause the video at the 4:06 mark, you might be surprised to learn that this is the same kid who appeared in Iron Man 3 and assisted Tony Stark in some way.
No, she didn't fade away with Thanos, but she has disappeared for the time being. Let's assume Star-Lord will be looking for her in the next Guardians movie, which was not announced as part of Phase 4 of the MCU. This means fans might have to wait a little longer to know where Gamora went.
I think when Tony snapped he only wanted it to snap away Thanos along with his army, and at that point Gamora betrayed Thanos by killing 2014 Nebula so she didn't get dusted because she wasn't technically part of his army anymore.
At the end of Endgame, Tony Stark uses the Infinity Gauntlet to reverse Thanos' snap, and sacrifices himself in the process.
Remember in The Avengers Tony pretty much sacrificed himself by carrying the nuke through the wormhole, yet in Avengers: Age of Ultron he was not able to lift Mjolnir. So, Tony simply risking giving up his life by performing the Snap isn't necessarily enough to deem him worthy.
2014 variant
Gamora is then brought through the Quantum Realm to the current universe and is recruited by the other Nebula to join her side. They find Nebula and Clint Barton in the destroyed Avengers Compound and try to convince her to abandon Thanos. However, she refuses, and is killed by the other Nebula.
A Mark 85 suit made of vibranium would have allowed Stark to use the Infinity Stones without harm, allowing his survival.
Gamora is alive in Guardians of the Galaxy Vol. 3 because this is the Gamora that came with the 2014 version of Thanos to the current timeline. The original Gamora that Peter Quill and the rest of the Guardians know died when Thanos sacrificed her to get the Soul Stone.
Tony Stark's Funeral
He stood in the back behind the Avengers and their allies. During the funeral, Keener thought that after having been in touch with Stark all those years, he had since come to see him as the only father-figure he ever had.
In a deleted scene, his fellow heroes paid tribute to the character, including Thor. He was also present during the viewing of Iron Man's final message and the rest of his funeral service.
Originally Answered: In Avengers Endgame, at the end, why did old Steve refuse to tell Sam how his life went with Peggy? What's wrong with telling Sam what happened? To put it simply, our Captain has decided to live his own life.
At the end of the war, Tony Stark falls into a coma while fighting Captain Marvel, spurring Riri into continuing his legacy as a hero. With the help of an AI duplicate of Stark, Riri designs an improved suit of armor and takes on the name of Ironheart.
Make-up was instead used to alter Chris Evans's appearance
In the “present”, an elderly Steve Rogers hands the mantle of Captain America over to Anthony Mackie's Sam Wilson, aka Falcon. In the finished film, the elderly version of Steve Rogers is portrayed by Evans, with the application of heavy make-up and CGI.
Thor, the god of Thunder, was undoubtedly the most powerful member of the original Avengers. His power continues to grow in the Marvel Cinematic Universe.
In Natasha's case, the trade is irreversible. She cannot be brought back. Hulk even admits that he tried when he snapped. Tony was able to handle even putting on the Gauntlet through sheer force of will.
It seems a sacrificial death made to claim the Soul Stone cannot be undone, even by the combined power of all six Infinity Stones. This presumably also applies to Gamora, hence why she wasn't brought back to life along with the rest at Endgame's conclusion.
Actress Scarlett Johansson, who was introduced as Black Widow in 'Iron Man 2' before going on to star in 'The Avengers' movies along with 2021's 'Black Widow', said that she has no plans to return to the Marvel Cinematic Universe in the future. "Yeah, it was awesome.