vazgussa
Also tell me if there is a chance to brick my phone because I am very afraid of it?
If you use the Web Installer it is very difficult if not impossible to brick your phone;
There is a Youtube video by Side of Burritos (If you go to settings, then subtitles, you can auto translate the captions to many languages) where he tries and fails to brick his phone while installing Graphene from the web installer.
Just read through the full web installer guide before installing, this answers a lot of common questions about the installation.