disk utility can’t repair a disk in my macbook pro but it tells me to back up as many files then reformat the disk then to restore my backed up files. so how do i do that?

gthicx wrote:

how do i fix this problem for my laptop?

I would try Internet Recovery and try again your First Aid.

Boot into Internet Recovery (Option Command R) and from the dropdown menu: Utilities>  Disk Utility> run the First Aid on your Macintosh HD (and the "Macintosh HD-Data" volume as well if Catalina/Big Sur) If errors are found and repaired, run again until no errors reported.

Disk Utility>View>Show All Devices The best sequence to repair —

• Volume level

• Container level

• Parent drive

Recovery: https://support.apple.com/en-us/HT204904