How to add WAF to an existing Nginx installation

Hi all,

Can anyone please help me install Ningx with Modsecurity / libmodsecurity3
to my existing Nginx installation on Ubuntu 20.04 without having to
compile Nginx?

In my opinion compiling Nginx makes updating / upgrading
Nginx a nightmare, in my opinion compiling is not scalable and
very prone to errors.

I mean no offense, but trial and compilation errors will drain your
energy even before the project begins....

When I update Ubuntu, I want everything to update automatically
just like Apache2.

There are a lot of step by step guides on the internet
but for some reason NONE of them work. Not even scripts
to install ModSecurity.

If using Nginx with ModSecurity without compiling is impossible
is there any other WAF that can be used by Nginx without
having to compile software?

Thanks in advance.