Don't skip BG3 on account of my comments. Lots of people adore it, and I certainly... respect it? I think my most fundamental problems with the game have to do with its assumption that you're already intimately familiar with 5th edition D&D rules. It's a discoverability problem, basically - expect to spend a lot of time with Google pulled up on your iPhone or whatever. By contrast, Larian's previous games (Divinity Original Sin 1 & 2) had bespoke rules and systems, and as such, they had to teach them to you as the game unfolded. I think this is very important. By this point in their evolution, video games should be essentially self-documenting (especially since a digital download doesn't come with any, you know, documentation.)
My other issues with the game center around (you'll never guess) UI. This is very specific to the console experience, so if you're on PC YMMV considerably. BG3 is constantly popping skills, items, etc. into your radial menus automatically, but it's all very inconsistent/arbitrary and results in a crazy mess you can literally spend hours maintaining. That's a meta game I just 10000000000% didn't feel like playing. (Note: I did try! For dozens of hours, in fact.) Here again, the preceding D:OS games fared much better, partly because they were much simpler. IMO those earlier games (especially the first one) struck a perfect balance (and by the way they're probably pretty cheap by now?) whereas BG3 just takes things a little too far for a console experience. (IMO. It is a very impressive technical and artistic achievement, and I wouldn't want to dissuade anyone from at least trying it.)
Diablo 4 and Elden Ring are completely different games - from one another and from BG3. More on this in a separate post.