Like a sibling comment mentioned, unlike Authy, you can easily export your data[1] from Ente.

Also, Ente is fully open-source[2]. If you wish, you can self-host the service and point the app your custom server[3].

[1]: https://help.ente.io/auth/migration-guides/export

[2]: https://github.com/ente-io/ente/

[3]: https://help.ente.io/self-hosting/guides/custom-server/