The E Foundation develops and maintains a free open source privacy-friendly de-Googled version of Android, which you can either install yourself on your existing phone or buy pre-installed on a new phone. They sell pre-installed phones through the Murena brand, all of which are manufactured by established companies like Fairphone, Samsung etc.
Fediverse address (E Foundation):
@e_mydata@mastodon.social
Fediverse address (Murena):
@murena@mastodon.social