You know what might help here. Check out my thread in the General category called BG3 as Tabletop. In that thread, I played D&D 5e with a person whose character is Diadell. I am taking her through the BG3 story using D&D 5e story and combat. The enemy stats are all genuine 5e stats and combat is genuine 5e combat.
It is any example of how this game would play out if they'd truly made it more of a 5e gameplay. Note: I may have my own homebrew rules. It's hard to remember the rules exactly as printed so sometimes DMs do make it their own. So if I flub up a rule or two, that's why. 😁
But seriously, id you don't know D&D, just try reading that post and see what it is supposed to be like.