Create a table in Libre Office, I'll wait...
(Hint,the devs have flat out stated they will never add tables to Calc, as it's wrong to do).
99% of Excel usage includes a table in the first, or second, sheet. Without tables a spreadsheet app is useless, in my opinion, regardless of how "wrong" it is (and I agree that it's wrong).
Did this forever first with Google, at least them I'd know instantly who sold my info.
Now I do the same with my mailbox.com account, and delete the aliases occasionally.