Why not use multifilament strings?

What is the difference between a multifilament and a monofilament tennis string?

Tennis String Hybrid Guide and Information : Lowest Prices on Quality Tennis Racquet Strings, at Golden Set Tennis

Nylon Multifilament Tennis Rackets Multifilament Tennis Strings - 1.30mm Tennis - Aliexpress

Pros using multifilament strings?

All About Tennis Strings

Tennis Racquet Restringing: Types of Strings - Elite Sports Clubs

Tecnimag - 3 KEY TIPS FOR CHOOSING YOUR TENNIS STRING

String Failure (continued)

All About Tennis Strings