Firstly, its absolutely fine not have a clear idea about what you want to do yet- a lot of people dont or they change their minds 🙂
Here’s what i think about the options you’ve said:
Pick History. You’re interested and even though you’ve said you didn’t do too well you’ve got lots of time to improve and youre passionate about it.
Pick Maths. You’ve said you’re strong at it and as you said it keeps lots of options open.
Then pick one of chemistry or English.
If you take chemistry then you’re opening up a lot of stem routes in a variety of fields like chemistry, chemical engineering, healthcare and also other stuff like psychology in some cases because 2 sciences are required. However, what i will say is that sciences are known for having a big jump from gcse to a level, more than humanities in some cases because you need to remember all your gcse science content for a level whereas for subjects like history most of the content will be all new to you. As youre unsure whether you’ll like it or not, look through the spec and maybe watch some YouTube videos made by students who’ve done the course already and see what they have to say about it. Also, make sure that if you do pick chem you pick it because you want to, not because your parents want to. It’s 2 years of your life which have a very big impact on your future, not your parents, so make the right choice for you!
With English, my advice would be to look at what texts your sixth form does it and see if they appeal to you. You could watch some plot summaries if you wanted just to see if they seem good reads- with essay subjects a lot depends on whether you enjoy the topics or set texts! Ive heard its a very content heavy subject so thats something to take into account, but if thats preferable to you than a less content heavy subject which is a lot harder to understand then English might be a better fit for you than chemistry. Again, i would suggest you watch some videos from previous students and look through the spec or some past paper questions to see if they interest you at all.
Btw, you’ve got plenty of time to decide. Lots of people i know didnt make their final choices until results day and some changed their courses a few weeks into year 12. If you still cant decide after year 11 then you could always start with all 4 subjects and then drop one- but do that preferably within the first couple of weeks because 4 a levels and an epq would be insanity lol.
Even though you said you might not be interested so much in new courses, you might want to look through the specs and watch previous student videos from their experience just to see if they do interest you or not. Psychology might be of interest (just off the top of my head) as its science-y and a bit more of an essay subject but then again as youre not a biology fan it might not interest you- looking at the spec can help you see if it will or not.
Hope that helps and happy to try to answer any further questions if you have them! Have a great day 🙂