I'll throw in a couple suggestions that came up when I searched for open world tag on steam, not sure what specifically you are looking for.
Spiderman Miles Morales, Days Gone, Witcher 3 with the new texture packs, Grounded (has been fully released recently), Warsim
Note: I've not played all the above yet, though I own most of them.
I already played Witcher 3 and Miles Morales. Haven't tried Days Gone yet - that one kind of flew under my radar. I love open world games (that aren't Ubisoft cut and paste crap) but my favorites are the fantasy ones because so much unexpected fantastical things can happen. Elden Rings and Harry Potter's worlds look to be amazing. Witcher 3 is my current gold standard.
As for trying Elden Ring, I can just see myself getting immensely frustrated with it.
"We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far."
"Universal compassion is the only guarantee of morality."