Earlier quoted context omitted.
What people want their career to be is often immature. It takes wisdom and experience to figure out what you should want. So coming into the conversation with that is limiting. I'd rather get the manager to be a partner in helping me figure out what I should want.
Then you should talk about how you you need help coming up with a plan! If I was your manager, I’d tell you that while your problem about setting career goals is real, your framing of the problem as something I the manager should tell you what your goal is is backwards. I’m not living your life, you are. The path of least resistance for me is to let you stagnate right where you are and then tell you you’re perfectly…
They don’t know! I didn’t when I was a young dev; still don’t if I’m honest. And for years all I ever really wanted a manager to say was ‘here’s a pathway I could see you going down’.
If there is one thing mentors and managers can usefully do it is to stop asking stuff like ‘what motivates you?’ and start saying ‘you might be good at X’