I'm moving towards simply having more devices, partitioning their uses. A decent tablet is a mere $50 (eg flo) and a good phone is a mere $100 (eg herolte).
It's easy enough to have eg two phones - a main one with FDroid only, and a secondary off-most-of-the-time one with YALP store convenience apps. Tablets you can diversify even harder because you don't have to carry them in your pocket.
So what? They can still track you across devices. Especially if they use some 3rd party ad SDK, which might use the Google advertising ID, or some other identifiers.
Modern tracking is fundamentally a product of executing hostile code on your own device. The idea is to never put apps that have built in or will otherwise facilitate surveillance on the more secure devices. This includes a javascript browser, due to its unwieldy attack surface.
Separate devices draw a line in the sand, rather than just accepting amorphous insecurity as inevitable. And then you can work on slowly moving your usage patterns away from the surveillance-foregone devices.
If you use them to connect to your home wifi then they show up on the internet with the same IP. It's very easy to connect separate devices to a single user.
I've moved more and more browsing to Tor. I have this HN account, a Reddit account, plus a few others. It's possible to do a large chunk of my browsing in Tor, though it's slow and sometimes pages render oddly without Javascript, so it's a bit annoying. But I like the feeling of not being tracked.
It's quite refreshing and works well, out of the box it runs js though unless you turn it off, a neat little reminder to use simpler sites and not support the popup/overlay hell that is the current web.
It's easy enough to have eg two phones - a main one with FDroid only, and a secondary off-most-of-the-time one with YALP store convenience apps. Tablets you can diversify even harder because you don't have to carry them in your pocket.