I want to be a lawyer so if I have to choose one, which one?
Choose the one that your the best at/easiest or the one that you enjoy.
History is an odd one; those who took either hate it and are bad at it, or love it and are good at it. The spec is very long; depending on what exam board is chosen (for me AQA), the content is ridiculously long and you will need to remember, in detail, many things.
Exam technique is crucial. Some questions are very vague, your teacher will tell you this, and you will need to know techniques that the question won't tell you to use like using provenance.
Depending what your school picks is also a huge decider (some topics are much easier and have less content than others; some use a lot of common sense which is good). Some topics are super easy such as British Medicine, where you can chat utter *******s about the advancement and change in medical knowledge- there is still so much content to learn such as key figures, key events, the dates of the time periods (for this one, dates play a huge role unlike Vietnam or something)
Basically, if you are good at memorising and retaining large and specific amounts of information, history is great; its literally a huge knowledge recall subject. You can still get an A (which multiple students have done) without offering "perceptive" analysis as long as its strong and backed up by evidence relating to the question. Idk about Philosophy but this is my experience and two-cents on History as a GCSE. If you are organised ans think you can handle it go for it.
I'm a maths/physics person, but did both Classics and Geography at GCSE. They weren't my best subjects, but I didn't struggle at all with the workload. So you don't really even have to be a 'humanities person' to do it.
I'd highly recommend looking through some university courses now and checking what they tend to want. They don't usually want particular GCSEs, in my experience, but they will want certain A-levels, and those A-levels may have prerequisites.