If you’re in EU https://murena.com/smartphones/ is a good compromise IMHO and it will be radically cheaper than an iPhone. I imagine elsewhere there are other companies selling new or refurbished deGoogled phones. Again that’ll probably set you back 300 € versus 1000 € for an iPhone. One is a tool, the other is, again from my biased perspective a former iPhone user, a tool too but mostly a status symbol.
Edit on parental controls : from a technical standpoint, which I’d argue it’s only part of the challenge, I’ve found https://doc.e.foundation/support-topics/parental-control specifically but more broadly https://f-droid.org/en/packages/io.timelimit.android.open/ or https://f-droid.org/en/packages/io.timelimit.android.aosp.direct/ which are more about self discipline. There is also https://github.com/xMansour/KidSafe but seems outdated.
I also have a PinePhone and PinePhone Pro… but I wouldn’t (yet) recommend them as daily drivers unless :