I have never gotten Clonezilla to work. I don't want to call it obsolete, but... it certainly isn't intuitive, and in 2024 I expect even open source software as widely known as Clonezilla to have a straightforward interface.
For simple data backups, I use Kopia.
EDIT: Apparently there's a GUI for Clonezilla called Rescuezilla. I'll have to give it a try sometime.