You don’t. Bg3 is like their other game divinity which I thought was super bad. The only people you would get to come to ddo are never winter nights players. Ddo is a complex grinding game, where one mistake wipes you, or one mistake means you have to level to 20 to remake your character.
Bg3 is just a casual story progression game, where you could make any mistakes and still win. Not to mention ddo is a cash shop expensive game. It costs like 150 for the game, 15 a month, and like 150 for the exp, stat, and skill tomes. You aren’t gonna get people who think 60 bucks is a lot for a game, which is the full game, to spend 500 bucks for ddo.
About the bolded part. I'm not sure what you mean by "casual" or "winning", because peoples' definitions differ on those terms, but if you mean combat, you obviously haven't done any combat in that game. The enemies are really using their skills, environment etc. intelligently to their advantage and to the players' disadvantage, and it's actually vice versa: Any mistake you make, even some unlucky bad rolls, can turn the tide against you pretty quickly and pretty heavily. Didn't notice the grease stain on the ground, and a goblin shot an arrow on a booze barrel next to a torch which lit everything up? Now your party is burning, concentration for Bless is broken and the enemy spell casters are next in initiative order? Oh, that seems bad.
Sure, there is a "story mode" if you choose to select it at the beginning, and there are many ways to avoid difficult encounters if you so choose, but that's ... D&D. The game isn't automatically casual, if it has well-established story progression (of which BG3 has many, actually); it can be very ruthless at times.
One more notion that's semi-relevant to this thread. A while back there was a discussion here along the lines of "BG3 vs. DDO", and there was this one poster who had the gall to tell me that "yes, even for you it's NOT BG3 vs. DDO", and their reasoning was because these are different types of games (MMO / nonMMO), and that I would be back here at some point anyway. Before that, I had tried to argue that it depends on the point of view, and, well, for about a month now, it has been exactly "BG3 vs. DDO" for me. I haven't logged in to DDO since starting the early access a bit before the launch date, and I trashed all my DDO goals, subs, progressions immediately. And I am still in the early stages of early access areas on my first proper play-through, of which there will be many...
So yeah, it really is a "x versus y" thing for people like me, who value other stuff than MMO/nonMMO, or free stuff from welcome back gifts etc. And there's no doubt I will at some point play DDO too ... but I will play Pool of Radiance on C64 emulator too, and I will go briefly back on other games as well, MMO or not. What I do know, is that BG3 has totally made me disinterested in other stuff altogether, or spending money on them. In other words it, effectively, has very much been a "x vs. y" thing in regard to DDO, Pool of Radiance, MS Minesweeper, you name it.