I've used Keepass since 2012 (Keepass2 on Linux, KeepassXC on Mac, Keepass2Android) synced with Dropbox but (experimentally) switched to Bitwarden this summer as a reaction to some HN thread, I've been very pleased! Haven't used it on Linux yet but am using the Chrome extension on Mac and the native Android & iOS apps and they work very well.

I've also been using Lastpass at work since 2015 so have experience of those three and if I had to start over and pick one it would definitely be Bitwarden. Highly recommended!