XFS. It fills the same role as ext4 but it's less likely to lose your data and that's probably the most important part of a file system. Not that ext4 is bad or anything, but XFS is good. The only downside to XFS is you can't shrink the filesystem size.

I always go LVM + BTRFS these days. I simply love the versatility.

EDIT: DO NOT DO THIS LMAO, JUST USE BTRFS, I AM SO STUPID

I use f2fs on ssd's and ext4 on hdd's

I don't see the need for snapshots, I backup externally

Well since so many people recommend btrfs because "it have never lost any data for me". I want to suggest OP to never use btrfs ever. Because it has lost my data, at least three separate times, the most recent time a week ago. And it's not because of a power loss or anything, it just corrupted my files for absolutely no reason at all.

Stay away from btrfs at all costs.

I like btrfs but only cause it got transparent compression. I don't need the extra disk space and it only helps a bit but I just think it's neat

I've always used XFS on spinning drives and F2FS on SSDs. No issues, they're very solid

I used ext4 for yeeeeaaaarrssss but now I'm using LUKS+btrfs, stable, encrypted.

FS is for nubz, do these instead:

Read

dd if=/dev/sda of=/dev/stdout

Write

dd if=/dev/stdin of=/dev/sda