What is making movies nowadays not look like the movies we grew up watching and loved?

Hello! First off, I am in no way attuned to or knowledgeable about working with cameras, what they see, shoot, and all those technical aspects. I would absolutely love to learn more about it, so if there are any guides or resources you'd like to throw at me to learn from, that'd be great. And if after reading this post you understand more of what I need, then even better.

Secondly, at the moment, I am very much just a cinema enthusiast or someone who appreciates beautifully done shots and color grading. I try to make short videos here and there with some creativity, but I haven't aimed for passion project films like that. When I make short videos, it's just with my phone. I am currently not a filmmaker and don't practice it, so while I do have some knowledge of contrast, composition, and color theory—maybe enough to be familiar with things mentioned in comments—I do not consider myself all-knowing, lol, but I would love to learn more.

Now onwards! So, I have been watching some movies and TV series here and there, and I noticed, A LOT OF THE TIMES, big-budget media has such a dull, grey look to them. There are some movies with color grading I appreciate and applaud, like The Bear, Whiplash, and The Batman, for example. But I'm missing the movies that have such warmth, glow, and life that they used to have, like Parent Trap, Empire Records, 10 Things I Hate About You, Juno, Superbad, and Before Sunrise/Sunset.

Usually, whenever I watch a movie and I see the warm look, I'm always guaranteed a fun and interesting watch. But nowadays, movies look so plastic, artificial—a business product, if that makes sense. People often go the usual route of blue and orange LUT, or even green and orange, which is most commonly observed in The Boys or other Prime series. I do love color grading, but I feel like it's best when it's utilized to further enhance the color palette of a shot that was set up with many color influences and lighting to achieve the palette, rather than just to color a scene... if that makes sense, I hope. Or maybe color grading does the majority of the work that provides these looks.

But seriously, what's making that happen? What makes films nowadays feel non-organic/lively? I believe it's because of cameras, lighting, and color grading, but I want to hear some discussion on all the aspects that go into achieving the FILM look and what is not being practiced anymore, leading to the artificialness of it.