I feel like hyprland is really popular, or at least it’s the one I most often hear mentioned. It should be really configurable as well, so maybe it’s worth a look. I’m not sure you’re going to notice much of a performance difference though, unless the device has a really limited amount of RAM.

I think the people behind Session cares for their mission, and it might align with OP’s, so maybe. Although I personally am not too fond of about all their choices.

The omission of Forward Secrecy for instance doesn’t sit well with me. Each to their own though, and they do go into their reasoning on their blog: https://getsession.org/session-protocol-explained

Likewise their last audit from 2021, lists quite a handful of critical/moderate issues in their apps, hopefully they’ve fixet it. Afterall it’s been a while since 2021. https://getsession.org/faq#security-audit