The best way to reclaim your privacy is to own the infrastructure.

I migrated my email to a hardened FreeBSD setup. Encrypted at rest via ZFS, isolated via Jails, and owned by me. Not a data-mining giant.

If you want to build your own communication hub, here is the blueprint:

blog.hofstede.it/self-hosting-

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If you have a fediverse account, you can quote this note from your own instance. Search https://mastodon.bsd.cafe/users/Larvitz/statuses/115916888922253276 on your instance and quote it. (Note that quoting is not supported in Mastodon.)