We're reaching the end of an era wherein billions of dollars of investor money was shovelled into tech startups to build large user-bases, and now those companies (now monoliths) are beginning to constrict their user-bases and squeeze for every single penny they can possibly extract. Fair or not.
Now more than ever, it's important for us to step back and reconsider whether we want to be billboards for these companies anymore.
For anyone unfamiliar, some good resources to have when starting your degoogling journey are below:
Privacy Guides - A list of privacy-respecting services you can use.
Plexus - A crowdsourced information bank of service compatibility with degoogled devices.
This random PDF - A study from 2018 detailing data that Google tracks about its' users.
FlorisBoard keyboard is the one to watch as the Gboard killer. v0.40 will finally bring word suggestions and inline autocorrect. In all other respects, it's more customizable than Gboard and can be configured to match the exact size/layout.
For email, K-9 Mail (soon to be Thunderbird Mobile) has made a lot of progress in modernizing its UI this year now that Mozilla has partnered up with the main dev, cketti.