I picked up a number of e-comic “first issue” comics for free (Spiderman etc) when Comixology had a big promotion. Reading them now, I can sure see why they’d be engaging to a 10-year-old, but fail to translate to movie format _and_ satisfy the aforementioned as an adult: there’s a whole lot going on between a few frames of comic book that the young mind richly fills in and generously excuses, but which pseudo-live-action just cannot present & justify to adults. Of personal recent reading: the one-page (9-12 frames) of Spiderman racing around trying to rescue J. Jonah Jameson’s son’s about-to-crash space capsule is a compelling casual read on paper, but trying to fit that into the time-and-space reality portrayed in a movie - an impending crash in minutes of a craft traveling hundreds of miles per hour vs. our hero traveling hundreds of miles & engaging in multiple conversations in what must take hours - _just_doesn’t_work_. Ditto any number of comic books we read while young: the time-and-space realities of the cinematic world can’t be glossed over like ink-on-paper can. Never mind all the other cultural changes which allowed then what is laughable or offensive now, or the technological changes that make the amazing from half-a-century ago into what is mundane, moot, or impossible today.
FWIW, on top of all that I never did get what was so great about F4 (as child or adult). Seemed a laudable attempt at a conceptual franchise that just didn’t work out as the genre matured.
The animated Fantastic Four was fun for me in the late 80s. Beyond that, the movies were BORING. I mean boring.