- Edited
It depends in my view on whether someone would specifically target you. If you have a large amount of money, GOS offers some small amount of benefit over iOS if someone were to try to hack the OS to hack you.
But most hacking doesn't really work this way, trying to break into iOS or GOS. Instead, a lot of it relies on user error and users choosing weak security settings or rarely targeting new security issues, more often targeting browser vulnerabilities that aren't patched.
A lot of hacking involves breaching a remote server, which is hard to do, then selling the data to low level crooks and "hackers" who engage in fraud.
GOS has a browser that is constantly updated, like all the time, but Apple isn't that known for having a lot of exploits.
I think for you, personally, GOS is only going to make it slightly less likely you get hacked. If you have proper 2FA not susceptible to a Sim swap, you're probably not going to be hacked either way.
Some Apps just will not work on GOS because of Google Play integrity api.
For you, low threat model, you could go with iOS, unless you think extremely high security is interesting, then go with GOS.
If you could be at all targeted, like if you're journalist or political activist or politician or ethnic minority in a country with racism or sexual minority in almost every country, then go with GOS.