Trouble with A Level Chem

Am i the only one that thinks a level chemistry is just really hard , like most of the topics take too long to understand and once you understand the topic you don't really fully understand it like .There are still pieces that are missing which are not required for us to know according to the syallbus and most topics just feels like surface level for example when we are talking about enthalpy change we are only taught to think of it as the change in heat energy between the reaction which is the system and the surrounding but not really given any ideas on what it is .A level chemistry always tell you to think of things as it is and not really question it further and this makes it really hard to understand topics. I am able to answer past paper questions well but not because i fully comprehend the topic but i know how things work for these type of question am i the only one that feels this way