History help A-Level

Alright so at GCSE I got 9s and final an 8, which I was pretty happy with :smile:

. However, getting to A-Level, I've been struggling and got mainly a B (60% on both tests) and have been feeling really discouraged. Evaluating at the end and interim are mainly my weaknesses and the structures for 20 and 10 markers hasn't really been going in my head at all. I know its normal to be awful first time round but now that its February I wanted to take the holiday as an opportunity to improve before I get another improvement prediction (B/C). I guess my question is if people have any websites or yt channel recs for learning more about essay structures , especially for OCR! I have a few methods but knowing a few more would be a life-saver honestly!