First and formost. Ignore the Google Rep. They have one task. Make you up your ad spend. I’ve yet to get Demand Gen to yield conversions on the same level as social ads (Linkedin, TikTok, Meta and so on). You can experiment with demand gen. I want to try it as a re-marketing campaign towards people who shown interest but not converted for example. Thats an experiment I have in my pipeline.

You should not do Pmax. Pmax has a couple of things going for it, but if you work b2b with lead generation its value is greatly diminished. Stay with search ads and experiment with demand gen. You might get it to have some kind of business impact on the awareness or consideration phases of the buyers journey.