Even if you don't encrypt your Linux' filesystem partitions, you definately should encrypt the swap / the partition the swapfile is on. A new encryption key for the swap can be created at every boot, removing the need of an encryption password. This behaviour does make hibernation impossible, so swap encryption isn't the default on Linux distros that have opt-in encryption.

https://wiki.archlinux.org/title/Dm-crypt/Swap_encryption

Does someone know how it's handled on Windows and macOS?