(US perspective) at my school at least people frequently did double majors even in seemingly “random” combos. interdisciplinary work is amazing, so you might find the overlap of both fields interesting (do some googling?). i’m also biased but sociology is like the macro version of psych and philosophy combined, so you may want to check that field out as well if you haven’t yet!
i also think humanities are undervalued in theory but very useful in practice. unlike psychology, philosophy isn’t really a “field” unless you plan to become a scholar/professor one day, but you’d still graduate with valuable skills/knowledge. obviously someone hiring a therapist, would generally hire a psych, social work, etc student. but for a lot of other grad school programs and careers wouldn’t be as partial to either field. for example, i once was even told by a lawyer that (American) law schools seek diversity of academic backgrounds, and sometimes prefer or at least equally value philosophy students to pre-law students.
you should also look into each program at your school, as they can differ by school. you might find the philosophy or psych programs at your chosen school actually don’t match any of your interests or goals, and that is a deciding factor to go with one over the other. ie, maybe you want to study the philosophy of gender but there are no female or gender-focused philosophy profs at your school; or maybe you want to do child psychology but no courses on that or related topics are ever offered. or, maybe you can do a double major to cover all your interest areas.
my very very hot take (in America at least) is that if you have multiple career interests or a career interest that doesn’t require very specialized skills (jobs like becoming a doctor or a visual artist, for example), i wouldn’t make what’s most employable your main factor. a well-rounded student from most backgrounds can find ways to find a good jobs in their field of choice. and excelling in a field you’re passionate about is MUCH easier than forcing yourself to study a subject you lack interest in but feel is more practical.
and of course if you haven’t started school yet i’d recommend spending your first semester with an intro course in each subject area you’re interested, if possible, so you can see sooner rather than later how you feel. and speak to the professors about their programs etc for a feel of the vibes lol
good luck! :)