"if there was a body"? if I am not mistaken, all corpses show their true form.

"grab that character from the past"? from my understanding, only select groups have access to any time travel device. and all of them seem cautious about using respective device.

I think she might have survived, but also maybe not. She clearly wanted to sacrifice herself in that moment so she either succeeded or was saved by some outside force

MCU fans: "I hate that nothing of consequence ever happens in the MCU."

MCU: Does something of consequence.

MCU fans: "UNDO IT!!!!!!!!"

I genuinely don’t think Wanda’s dead. It just wouldn’t fit to have MoM be her last film, and that’s how she dies. Plus, if you watch when the Temple is crumbling there’s a pulse of red energy, I’m wondering if it was Wanda teleporting away (but she doesn’t have teleportation does she?) or if it was her powers creating a protective cocoon like Jeans powers did in X2 when it shielded her from the water.

Maybe it could’ve been a side effect of her body getting crushed with all that power in her. Kinda like if you crush a bottle of cinnamon, it’s gonna leave a little cloud behind.

There's actually nothing to suggest she DIDN'T flee the place as it was collapsing.

That bright flash of energy could be any number of spells or magical explosions. Perhaps she "warped" out of there using a new power. Perhaps she used magic to stop the debris, leading to a big red explosion of power. Perhaps she died, and the explosion was the release of her power. We don't actually know. There is nothing to prove it either way UNTIL WE SEE A BODY. If they want her back, she'll come back. It really is that simple.

What reason would she have to flee if she allowed the temple to collapse on her?

....to not die.

"What reason would she have to NOT COMMIT SUICIDE?" Let me think. Oh yeah, to live.

Honestly I can't even believe you have to ask that lol. I'm not actually saying she didn't die. All I'm saying is that if she didn't, we'll find out when they bring her back. If she DID die, then they've clearly not done a great job conveying that given how many people are questioning it.

At the moment, we just don't have any official evidence to prove it one way or the other, and these never ending conversations about why and how a character did something, when we don't even know if that's the way it was meant, is pointless.

Everybody just chill out and wait for an actual answer

It sure looked like she was going for suicide.

Also, if they decide to go the comic-accurate route, then her being dead is really no big deal. She's just gonna resurrect herself with chaos magic from the afterlife and come back again.