Outlook got updated on my iPhone last night and now they want me to agree to having my data shared with 807 partners.
Important note: I don’t use outlook as my primary email provider. I use Proton with a custom domain but I keep outlook for some old emails.
There are extensions for that.
In Firefox Consent-o-matic and Ghostry both do a good job in android and Linux/Windows.
I have no idea if they have that on iOS though given Apple forces browser makers to reskin Webkit.