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You probably can't trust your password manager if it's compromised
(www.theregister.com)
This is a most excellent place for technology news and articles.
Personal recommendation: Start with a selfhosting support software like Casa, Yuno or (my recommendation) Cloudron. Start hosting the app there with frequent backups and occasionally export into regular Bitwarden as a failsafe.
And when you are comfortable switch over to properly self hosted Vaultwarden.