Yeah, ideally you would just use a dumb phone or some Linux phone.
Worst thing you can do is to use stock Android with Google account connected to everything (gmail, contacts, gpay, maps, calendar, play store).
Work profile is a great compromise, a lot better then using an iPhone.
I lost my hope when it comes to Linux phones. They will never get the app support Android has so you will have to run some kind of Android emulator anyway. If you think GraphaneOS has app and notification issues imagine what issues will this cause. I thought that Pinephone will at least solve hardware issues (as in that we will see a lot of clones and it will be easy to get some Linux phone hardware) but even this didn't happen. So we still have no hardware nor software. Sadly Android is the only way to go. When google closes the source code we'll be fucked.