I bought a used Pixel 6 (for about $120 on Swappa) and installed GrapheneOS. I understand the irony of deGoogling and using a Pixel phone. From what I understand, the core reason GrapheneOS relies on Pixel phones is because they offer hardware security features (like the Titan M chip), an unlockable and re-lockable bootloader, and guaranteed long-term updates.
My favorite part of my phone (besides the ultimate security and privacy) is that my only “app store” (besides the GrapheneOS store) is Obtainium. There is nothing on F-Droid or Google Play that I can’t find (that I use/need) with Obtainium and IronFox. If I absolutely need to access something that requires proprietary or unwanted applications, I use IronFox to browse the website (my bank for instance). I have complete control over what my phone does and I only have FOSS software installed. It is a lot more work than I think most people would be willing to do, but it is important to me, and I think it is the only way (for me, this is subjective) to be truly free of Google or Apple and still use a smart phone.
Other “privacy” ROMS still communicate with Google in some way. The other ROMS are moving in the right direction, though. /e/OS, for instance, switched to AOSP instead of LineageOS, but it uses microG. By its very nature, microG communicates with Google, so that is not something I am interested in using. Some of the GNU/Linux mobile projects are showing promise (check out postmarketOS ), but they are a ways away from actually being reasonably usable on a newer everyday main device.
In conclusion, yes, just end it all. The best I can come up with is to deGoogle and reject all big-tech.
That be ok. Me crew sails the ‘igh seas an’ we don’t 'ave to share passwords.