I've cancelled my subscription yesterday, conveniently it was about to renew at the end of the week, so I have a few days to migrate from Proton, here's what I'm thinking of, but I'd love to hear what other people are switching to
Fair enough. In case we do need to move, here's a quick tip: KeepassXC and many other password managers are able to read Bitwarden export files, so you can seamlessly move credentials there, should the need arise.
Also, Vaultwarden has a web interface, which can do as a temporary or full substitute. I used it for a while, it's totally doable.