welcome to the ghetto of network servers
(aka chirpstack installation steps)
The typical installation likely is into a virtual machine or into remote instance on the cloud. However when installing directly onto local machine, ansible probably doesnt do much for you.
Chirpstack installs on debian based platforms, eg Ubuntu or raspberry pi. Other distributions with different packaging management would require downloading chirpstack binaries.
If you're a windows 10 user, you may chose to practice installation on WSL2. Although WSL would never be used for actual server (by any sane person), its useful to run virtual machine to familiarize yourself with install / setup procedure of chirpstack. Watch this video if you havent already got WSL2 on windows 10. Be sure to set default to WSL2