Can nexus5 use any software of Android?

This is definitely possible, because this mobile phone is an Android system.

However, even if you can install the software at will, you need to pay attention to the software download. There are many untrustworthy things on the Internet.

The software of mobile phone is best downloaded from App Store. The software inside is safe and the official version.

First open the application treasure software on the mobile phone, then search your software, find it, download and install it.

You can also download mobile phone software on the computer, open the application treasure on the computer, and enter the application to download the software.