Opensource

I'm looking to move my dad, who is not versed in technology, from Windows 10 to Linux. Windows 11 is not supported on his old laptops and given his computer usage I think it's not worth to buy a new laptop just to be on Windows 11 with Slopilot. He uses Excel a lot, but only basic functionality, which any office suite can do. The problem is he is accustomed to the Ribbon UI and although he has LibreOffice on his other computer, he seems not to like it, I think he's lost in its UI/UX. I would like to find an office suite for Linux that looks like MS Office. It doesn't need any bells & whistles, basic spreadsheet and document functionality is enough. I'd like to move all his Excel spreadsheets to that new program.

I looked at OnlyOffice -- I think it's the closest match. But it's Russian (I believe their HQ in Latvia is a smokescreen). WPS Office looks kinda Ribbon-like, but I see they focus heavily on AI and cloud. Collabora is based on LibreOffice. LibreOffice is not like Excel. I think it may not be possible to find what I'm looking for, but perhaps somebody can help.