What have you found helpful for getting an open crumb (sourdough)? I can make some beautiful bread but I’ve never gotten an open crumb.

I know that it’s not necessary and it doesn’t mean your bread is good or bad, but i’ve been making sourdough for years and i’ve NEVER gotten an open crumb like i see people making on instagram. I’d like to be able to do it at least once just to see if i can. Thank you!