I’m using a SFOs as daily driver, in my case, I use telegram/signal, e-mail, phone and the browser (I think with an old BBOs, I will had enough! IAHAHAHAHA)
At the moment that you use android, you depend on google, most of the apps use google systems, even with micro-g installed (I’ve got waydroid in my phone) some apps didn’t work, and micro-g is connecting to google at the end, only with protected privacy. From my point of view, currently Android = Google. I don’t know if huawei found a way to avoid it, but I expect no rom with android will be 100% google free. Can be better? Sure, google free… I don’t thing so.
If you don’t wish google at all, you need to stick to Ubuntu, Sailfish or similar Os, and be aware, maybe there is no app for something you need. (For example, vacuum cleaner, your car application or Whatsapp)