I created a google takeout and in that zip file I found some files containing a ton of data about me. It has logged every single page I visited while using the google search engine and chrome browser. It even logged every single time I opened an app on my old android phone. It even has VOICE RECORDINGS of me and a log of every time I used google assistant. This is just some of the data and I’m very sure there is even more data they have.
Look at which devices are supported my grapheneos, calyxos, /e/os and ubuntu touch/droidian and get the newest one of those that you can afford. Usually a google pixel (ironically) but also fairphone are well supported and are better IMO.