Is this a learning disability?
It’s dyslexia. I have the same issue. You can work around the problem by picking apart each sentence and highlighting important text. For college I read the assigned chapters (sometimes the same passage a dozen times). I then go back and reread them but this time I highlight what I feel is most relevant to our studies. I then take those highlighted sections and write them in a notebook. I rewrite those sections in a second notebook neatly and condense them using bullet points. I transfer those to flash cards with questions on one side and answers on the other. I then draw pictures next to my rewritten notes to trigger my memory later during a test. Last, I study the flash cards with my kids daily until my memory is flawless. So far these steps have worked for me. I maintain a 4.0. Bonus that my kids have been studying with me since kindergarten so their academics remain college level.
Maybe you should be tested for dyslexia which can cause difficulty understanding what you are reading. It can be treated. President Eisenhower had it.
Gunna say - that all sounds pretty normal to me.