Can you argue for a higher grade at UCL?

Just got my grade back which is lower than I expected. In my feedback, I've got three paragraphs of positive comments and two sentences about what I lacked. I read past papers and the rubric several times and am still confused about why I got this grade. So I wanted to argue for a higher grade or at least a more detailed explanation of what I did wrong.

However, I found the academic appeals procedure that our professor emailed us which doesn't accept 'disagreement with academic judgement'. Also I was thinking about like a chill email to my professor, asking for a revision of my assignment instead of making it as serious as some appeals procedure.

My question is: what should I do now? Is it appropriate to email my professor asking for a grade revision? This is what I would do at my undergrad uni but I don't know if it still works here, since it is my first year studying in the UK.

Thanks in advance!
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P.S. Here's the link to the appeals procedure: https://www.ucl.ac.uk/academic-manual/chapters/chapter-6-student-casework-framework/section-7-academic-appeals-procedure#2

You need to read up on "Grade Grubbing", much hated by anyone in the marking business.

https://marktomforde.com/academic/undergraduates/GradeGrubbing.html

Save it until it really matters AND you have a clear procedural error to flag up, not just "I think I deserve more".

Well I guess I'll ask them why I lost these points. Based on sample essays they've given, the essays that got the same grade are like significantly under word count or have referencing problems

You say that “I've got three paragraphs of positive comments and two sentences about what I lacked”. Before you ask for more, read the feedback, don’t skim it, read and think about every point it makes, and use that to re-visit your essay with a really critcal pair of eyes. Nothing more annoying that a student asking “why didn’t I get a better mark” when you have already written it down for them.

Why is it soo taboo in the UK though? I've attended universities in Aussie and the Netherlands, most professors are very chill and welcome students to ask questions about their grades