You can literally re-spec and redesign your character at any point. There's no point to wasting your time picking the perfect aesthetic if you can simply change it 5 minutes later.
I want to continue BG3 so bad, but the D&D combat is absolutely not my cup of tea. I love the world, the story, the characters. I loathe turn-based combat. Such a bummer.
I hated it at first as well. I really had to explore a lot and level up before it got good. Unlocking more abilities as you level really helps, especially on the melee characters which get extra attacks per turn.
We abused Asto a lot as a sneak attack sniper and locksmith.
You can save mid-conversation if you're trying to get a particular outcome.