How to start promo talks

In my appraisal meeting manager had nice things to say. But he was avoidant on promo or monetory talks.

He gave me really short goals like do some ai demo or grafana. I now realised that some effort could have been quarter wide stuff. Im 12 yoe and my title is lead gunning for architect.

How I would have nudged the discussion correctly? I asked him how to get more responsibilities and he had a generic answer.

Also I speak as someone grown up in witch switching every 2 years and being satisfied with status quo. Also as a shy guy difficult to broach this topic.

Your thoughts please. How to nudge the discussion in the direction in later 1:1s