How do you practice reading defenses?

Hello everyone! I'm brand new to American Football/Madden and I'm balls deep in it now. I enjoy playing Online H2H and I'm trying to get as good as I can. I have a really hard time reading defenses and I would want to know if there's any tools y'all use to make yourselves better at it? Is there like a mini game I don't know about to guess which defense you're in? Just plain old YT? Lmk :)