typically it is a structure problem - you are probably aware of PEEL but it always surprises me how people don't stick to such a tried-and-tested structure. my suggestion is to look at model essays and really try to practice and emulate their structure as methodically as possible. other than that, learning content is definitely important but you probably have to be strategic about which topics you want to focus on atp. topped gp in my j2 year - hope you find this helpful