I don't find trailers spoil anything for me. I love watching trailers and getting a 'sense' of the film. The majority of them don't spoil the movie... in fact the only time I can think of where I felt like a trailer did was Cabin in the Woods. I literally immediatley wished I hadn't watched that.
I just wanna avoid major story details.
But TBH... I doubt i'll succeed.
It's like any addiction. You think 'oh readind this ONE spoiler won't do too much damage'... and then again... and again... and it all adds up
Just accept that this is the direction they have taken.
Then, you can either decide this version isn't for you and stop watching. OR you can decide to enjoy it for what it is - an elseworlds tale.
'In Elseworlds, super-heroes are taken from their usual settings and put into strange times and places - some that have existed, and others that can't, couldn't or shouldn't exist. The result is stories that make characters who are as familiar as yesterday seem as fresh as tomorrow.'