Use the most popular and powerful eSoftTOols Excel Password Recovery (https://www.esofttools.com/excel-password-recovery.html) Software. When you forget the password to your Excel file, this utility comes in useful. There are three methods for recovering/removing Excel file passwords: brute force attack, dictionary attack, and mask attack. Each method can recover Excel file passwords of any character combination. It also supports all versions of Windows and all Excel file extensions. You can copy your recovered password using this tool. You can try out the free demo version of this tool. It will assist you in recovering the first three characters of the locked Excel file.
Read more - Recover Password-Protected Excel File (https://www.esofttools.com/blog/recover-xlsx-file-password/)