Just use GrapheneOS. It’s open and tested by even Celebrite to break in but so far no luck.
Apple is good in terms of UI/UX, I will not deny that. But they might push an update to a specific region like for example they did in Hong Kong to limit Airdrop to be used only after every 2 hrs and with only 5 persons. Not sure about the time. Cuz the government requested.
If they are willing to keep their market there and complying to government. Then how would you trust them ?