I really struggle with the camera. I've zoomed it out as far as possible but still struggle to tell what's going on with multiple enemies. Usually get hit by ranged when I'm melee on someone.
In moments like that quick switch between your characters, you shouldn't really be on one character for too long. Remember certain abilities are AOE, so clumping up enemies around Cloud for example, can be really good when his ATB is charged. Also enemies often give tells when they're about to do certain attacks which will let you anticipate their actions.
As for the camera, are you locking onto enemies? Every fight tends to take place in a "circle" area around your enemy, you run around the enemy the camera is locked onto. What really matters is the distance between you and the enemy depending on what character you're controlling.
- Tifa should be right up close, is great at one vs one battles, not so good with multiple enemies.
- Aerith should be at a distance, is extremely powerful when she pulls off her multi-hit spells but requires timing and can't take a lot of damage.
- Barret is mostly distance (gets decent melee weapon at one point) and he can take a lot of damage, he's just really slow and cumbersome.
- Cloud is the most versatile hybrid character and is fantastic against lots of enemies.
It can get chaotic at times, often there's not much you can do about it (especially certain boss mechanics) but the key thing is you know what went wrong and how to fix it. Unlike FFXV's combat which is just unwieldy and out of control.
The enemies tend to target whoever you're currently controlling (I'm not the biggest fan of this tbh) so you've gotta be quick in preparing your ATB and switching between characters and putting them in the right place, especially Aerith's double spell ability.
The combat is obviously not going to be everyone's cup of tea unfortunately, and if it's not your thing, it's not your thing. But I would be the first to say if it was crap and it's simply not, there's a lot of fun to be had with it. I normally don't use arenas and things in RPGs, I'm normally all about story and character development, but I loved the arena in FF7 Remake because I always felt in control of the fight and knew what I was doing wrong, which is something most games get wrong IMO.
The combat opens up as you progress, especially when you get Aerith. I thought I'd dislike her in the party but she became my favourite combat character because of how her abilities work. She is so powerful and it's really satisfying when you use her correctly.