Some apps that you use are not safe. Aurora store doesnt send too much data to google but it doesnt verify app signatures which can lead to installing malicious apps, use normal play store instead which verifies app signatures (its also suggested to use by grapheneos devs). Whatsapp, collects data about you. Cromite, uses adblock plus which is really bad. Also here is another reason why cromite is bad:

“Cromite has very problematic changes included which substantially reduce privacy and security. It reduces security more than it improves it. For example, it includes the highly problematic Eyeo filtering engine from the company behind Acceptable Ads, Adblock Plus, etc. which took over the forked uBlock extension misleading people with the name pretending to be the uBlock Origin project among other extensions. Eyeo’s C++ code is low quality and has memory corruption issues… Cromite including the incredibly sketchy Eyeo content filtering engine and stuff like additional codecs goes against what we’re trying to achieve. We also don’t think the randomization-based anti-fingerprinting approach works, among other issues”.