I’m also still working on this and on my end I think the key for me is “practice.” With AI around I usually ask it to give me 10 questions on the sentence I got wrong. For example, I’m really bad with the particle に. When I get it wrong, the sentence sometimes mean something completely different. For example:
留学している妹に、母が手紙を送りました。
弟に宿題をさせました。
I kinda get confused who was the person that did the action to whom. And if that’s messed up, it changes the meaning of the sentence a lot.
I think it would help if you share some sentences that you had trouble identifying. Maybe I’ll struggle with it too 😅

