Unlock or bypass password protection on XLSX workbook

Brief context: My father recently passed away, I'm his only child and he left zero instructions or guidance...so I'm basically starting from scratch trying to figure out how he had his life set up, in a bit of a panic mode. I came across an XLSX file he had on his PC with my name on it, and seems like it would have pertinent information... but he password protected it (as he did with nearly everything - even scanned copies of retail receipts).

I found a booklet that had a few passwords written in it - tried those to not avail. I tried everything I knew of or thought it might be, but none of them unlocked the file.

Out of password ideas, I then tried the .zip trick, but when I try to open it I just get an invalid file/directory error. I've also tried to open it with Google Sheets, but it also asks for the password.

Are there any other ways I can bypass or remove the password protection?