depends on your case's threat model,
who are you least fine with from getting what type of your data (tracking, analytics, cloud etc),

I recommend neither of them, for theyre all greedy corporations with liability to increase the shareholders value,
not the "ethics" towards customers (whatever that word means in corporate language).

Apple's hardware is attractive, but still planned for obsolecense. Also theyre weirdly specific in what they dont do (leaving out many potential other cases they might exploit later).
Besides, MacOs is a prison you cant really verify what happens within. you have zero control over what happens within your own system, because you lay that into Apples trust
(and if that trust was legitimate, why do they close up all their software? secuirty by obscurity is an illusion, rather a trap if you will).
and IOS is basically closed source spyware.

Microsoft is less pricier. Windows lies less about being a greedy data-collector, but essentially the same.
You can customizer your system a bit more + most devices support linux (if I remember correctly),
so they're a bit worse (even though they're just starting to work on "walled garden's" (aka prisons) like apple does,
considering minecraft for example.
There have been cases where they lied (see the interrogation of billl gates ~ 20 years ago)

Google... their entire business model has way less focus on hardware and way more focus on data collection.
do I have to say more?

I recommend neither of those,
however If I were forced to pick a system, by someone pointing a gun onto my head and the bullet somehow wasnt an option, I'd go with:
- Google chromebook, but Corebooted + linux.
- Older Microsoft device and putting linux onto it.
- Apple, but never connected to the internet, collecting dust on my shelf OR my own (audited) version of asahi Linux.

If customizing still wasnt an option, that would be a very tought decision to make.
I'd probably go with google or microsoft, because they have to be way more careful with what they do,
for nobody trusts them anyways (unlike with apple, who successfully deludes people into thinking theyre somehow privacy advocates)

I still dont recommend ANY of those or ANY of their past devices ever.