Need advice on how to frame a conversation with my manager about recognition and progression

Hi all, looking for some input on how to have a conversation with my manager regarding my current situation.

I work in an organisation where there is currently a promotion freeze. I have been told a few times that once this is lifted, I will be considered for progression. That said, I have been consistently handling a higher volume and complexity of work than many of my colleagues, including developing automations that benefit the entire team.

Despite this, during my recent S1 review, I noticed I was scored in the bottom 50 percent of the team. My manager advised me to “ignore it” and said it is not a fair reflection, but frankly, it is demoralising. I am seen as a go-to person for support, not only by peers but also by more senior colleagues, and I often assist others outside of working hours using my personal phone. Given all this, I am struggling with the disconnect between the recognition I receive and the value I bring.

How would you recommend I phrase a message or conversation that raises this respectfully but clearly? I want to avoid sounding confrontational or entitled, but I do want to assert that the situation is disheartening and ask what tangible development or recognition I can expect going forward.

Any thoughts or advice from those who have navigated similar situations would be appreciated.