Yeah, you do have to have some trust in such services. Some of the ones I use:

1. Miniflux for RSS
2. Migadu for e-mail and calendar
3. Signal for messaging
4. Mastodon for, well, Mastodon
5. GitHub for Git hosting and CI/CD
6. Bitwarden that you've mentioned I also buy hosted

Read my reasoning here, if interested

I try to NOT self-host any service that:

1. Is open-source and provides a hosted solution
2. Doesn't have some technical/price requirement (like a media library/photo library where you pay per GB) to use the mentioned hosted version
   • if this is the case, I donate to the project I'm using instead