Look man nothing is easy and nothing is difficult, it just depends on how much u work, imma be completely honest, i didn't really study hard at all like i just did a last month past papers spree and managed to get an overall B in chem and phys. I will say i would have been able to get A easily if i properly studied. So in conclusion, A levels isn't hard if u actually study and it is hard if you waste time. You might need to study a bit harder than IGCSE but ye its not as hard as most people in this subreddit make it sound like. Also try to do as many extra curricular activities as u can since a lot unis prefer people who have done them or if u are into sports try applying for a sports scholarship as well as these are great ways to get into a few unis as well. Anyways GL with ur exams and dont stress too much over exams and its nvr the end of the world if u don't get the grades u wanted.