Hey there! I relate to your situation and wanted to share some advice. Honestly, little mistakes like that are more frustrating than specific question types because you don't know exactly what to fix. I would definitely recommend a tutor. I decided to start working with a tutor when I noticed a plateau in my scores, and having a second set of knowledgeable eyes really helped me close some of the gaps in my scores and to fix common errors. Sometimes you just need a new perspective to zoom out and see your habits. Studying is hard enough, so having someone else to help navigate your journey to improvement is very helpful :)

Good luck on your studies, and I hope this helped!