This won’t help you right now, but in the future: If you don’t have time to setup some super good backup, just get a cheap TB USB stick and sudo tar --one-file-system your partition root directories onto it.
tar has a test option, so you can detect if the USB stick is maybe broken.
This stores everything but some boot stuff, which can usually be restored with booting some live medium (like the install medium you used) and going into a chroot. Almost all live mediums have tar, chroot and can mount your USB stick, so you can restore your stuff.
Despite some people being afraid the USB may lose the data, it takes several years for it to do so. Enough for home PC backups.