Desperate help with applying to oxford courses

Psychology, politics. The humanities basically.

“"Psychology at Oxford is a scientific discipline, involving the rigorous formulation and testing of ideas. It works through experiments and systematic observation rather than introspection. Data science and coding play an important role in how we train students.”” … from their page, hence why they have a grade A requirement/ expectation but obviously there is flexibility . I would advise you first to really think about what course you want to do at uni ,rather than being so focussed on Oxford.

Psychology, politics. The humanities basically.

I study psychology at A levels. I have other options other than Oxford which have no complications, which is why I am trying to find clarification here about the requirements.

I study psychology at A levels. I have other options other than Oxford which have no complications, which is why I am trying to find clarification here about the requirements.

As above, psychology at Oxford is absolutely not a humanities course. Psychology courses can vary between unis and at Oxford it's very heavy on the experimental side, neuroscientific/biological bases for psychological phenomena, and generally on being very much a science in general.
Also politics is a social science. While less quanitative than psychology by some margin, still involves some degree of quantification and statistic, and the methods of inquiry are definitely quite distinct to the modes used in the humanities.
Psychology at A-level doesn't necessarily reflect the nature of degree level psychology. In fact often it's rather different (quite a few years ago psychology courses actually sometimes preferred applicants not to take it because the A-level gave such an inaccurate perception of the nature of psychology as an academic discipline).
While as above psychology courses can vary all BPS accredited courses will contain a certain amount of scientific, experimental and statistical content in line with BPS requirements - however some emphasise those areas a lot more as noted (such as Oxford, Cambridge, UCL, KCL, and Edinburgh).
Realistically speaking I think if you don't enjoy maths and struggle with it, you should really not consider pursuing psychology or economics and also consider whether politics is the right fit. As for history, are you actually interested in history and the methods of history, evaluating primary sources etc...? I've not seen any real reference to this and so it feels a bit like a rabbit out of a hat here.
If you enjoy the methods and modes of studying and inquiry in the humanities, but are interested in social phenomena and human behaviour, perhaps explore anthropology as an option - that sounds like it might fit both your preferred ways of learning as well as explore aspects of those areas you seem to be interested in Since issues of e.g. cognition and behaviour, as well as social and cultural interactions and experiences (including within political and legal frames) all very much fall within anthropology's remit! However anthropology often focuses a bit more on qualitative rather than quanitative data (such as ethnography) which might fit your preferred approaches better

Of course, but if you applying to Oxford, they want people who are passionate about their subject and show intellectual curiosity hence why I am recommending you decide what subject you really want to take as you have listed degrees that could be considered disparate and require different skill sets. You mention “online school “ and only being offered history as a “separate subject” ….are you not at school in the UK ? Do you not have a careers advisor or teacher to talk it through with? If you don’t have what is “ expected” , as long as you meet all essential requirements, they should still consider you but equally you will have to upsell yourself in other ways…plenty of excellent candidates get rejected solely because of the competition and you will be competing with candidates who meet all the “ expecteds ” and more.

No it doesn't. But thank you for the advice. I love history and I wanted to study it at A levels but my school didn't offer it. As for psychology, it is a really good fit for me, I have reached out to some people who did Psychology at red brick universities like Oxford and they said that although there is emphasis placed on quantitative and experimental research, it is still regarded as a humanities subject and therefore the course does cover disorders such as schizophrenia etc. Also the course is paired with philosophy so obviously it would be more qualitative than quantitative. I am not dismissing that psychology is a science, if that was the case then we wouldn't be doing statistical tests such as Spearhman's Rho or solving standard deviation etc, so I know that.

theres probably very little point asking for advise on here if you already know all the answers!

With regards to the terms "expected" and "highly recommended" I would recommend asking Oxford admissions directly about these.
Working in admissions myself, I can say that this could stretch from "well it would be nice to have, but it's not going to affect your application" to "we'd only consider you without in very exceptional circumstances".
Basically anyone outside of Oxford admissions would just be guessing.