I use LibreOffice all the time, have done for years now and recommend it.
However, I only use the Calc Spreadsheet and Writer, both of which will read and write to MS formats.
Some aspects are a little irritating and it maybe as good as MS Office from ten or twenty years ago.
Basically, it does everything I want but I cannot be considered a power user with spreadsheets. Just
some simple stuff now and again. If I need to do anything serious I'll use Access.
I have Office2021 but have never used the included Word and Excel. Only used Access2021.
Some do claim that the LibreOffice Base Database is an alternative, or replacement for Access but that is
pure nonsense from people without a clue. Base possibly may be useful to some but I cannot think of a
single application where it could be a consideration. You'll often see the ten or eight alternatives to Access
with Libra Base Database being at, or near the top. Clearly, as with most other "best of" declarations they are
compiled by the seriously inexperienced with an agenda of some sort.