If I reinstall or reformat my computer, but forget to backup my documents, then can I recover my data

If I reinstall or reformat my computer, but forget to backup my documents, then can I recover my data

Use “Unformat” to recover data from reinstall or reformat computer

Use “Recover partition” to recover files if computer partitions changed or damaged or deleted after reinstall or reformat.

Use “Full Scan” to restore documents from reinstall or reformat computer if “Unformat” and “Recover partition” can not