Ok here are some examples of the things I struggle with:

Concentration,

Memory (dunno if that's linked to concentration though i.e. I'm not concentrating enough to absorb new info so can't recall it later on),

Motivation,

Ability to do mental maths (never my strong suit but has definitely gotten worse to the point that it's embarrassing that I can't do such simple sums in my head)

Ability to read (I get overwhelmed by large amounts of text cos it's so hard and I used to be an avid reader, which is a MAJOR PROBLEM for Uni when I'm supposed to read lots of journal articles.)

I misunderstand meaning so if a word has more than one meaning or sounds like another word, I'll hear or read the wrong meaning. This especially happens with positives and negatives eg so I'll understand 'does/doesn't' the wrong way around which confuses me. This makes reading very hard because I keep thinking sentences contradict each other until I read it several times.

My visual processing ability has decreased so it makes me much slower reading and copying things off the board in Uni and working out problems.

I struggle sequencing tasks, and sentences and paragraphs when writing (which makes writing essays so hard).

I can't think of any others off the top of my head... I had my IQ tested though just over a year ago and it had dropped 11 points so I know these problems are real and not all in my head.