Oh, I've been down that rabbit hole too. My first few attempts at AI ads were so obviously fake it hurt. Then someone pointed me toward a node-based workflow - total game changer.
My go‑to now: generate a 10/10 image using GPT's image tool, then turn it into video with Kling or some similar motion engine. I work inside Kubflow, but honestly any decent platform does the job. Just stay away from Higgdfield - that UI/UX is absolutely cursed.
The real trick I've learned: the AI video has to be so good it confuses you. I mean for a UGC-style ad, you want the viewer to pause and wonder "wait, is that real?" Obviously we all know it's not, but that moment of doubt is where the engagement lives. If it looks too polished or too clearly fake, you lose them instantly.