Can I build my WordPress site offline?
yes, you can run WordPress offline in your system. XAMPP is a free software which can be used to install WordPress on your computer. Most of the WordPress users complaint about getting their website broken because of any poorly coded plugin or a theme. They should test them before using.
How do I install WordPress on my Mac 2019?
How to Install WordPress LOCALLY on Computer (Mac & Windows
Does WordPress work on Mac?
No, you won’t have any compatibility problems. Many of us use Macs. If you want to develop the site locally on your Mac you will need to install a local server. You can install WordPress on your hosting provider, and edit/create themes or template files on your Mac then upload them to your server via FTP.”