To ensure WordPress site safety, it is essential to have a good, automated, backup strategy. Our plugin of choice for this is the UpdraftPlus plugin (https://wordpress.org/plugins/updraftplus/). UpdraftPlus has a simple interface and is easy to use. And the free version will likely work for many people.
An important feature of the UpdraftPlus plugin is the option to save your backup files to a number of different cloud services (e.g., Google Drive). In case there is ever an issue with your hosting service, having your backup storage separate from hosting gives you an extra bit of security.
As an aside the quality of WordPress plugins varies greatly. Always check the number of downloads, update history, and ratings of the plugins you are considering. You want a highly rated plugin that is used by lots of people and is frequently updated. A poor quality WordPress plugin can be a source of security holes. Be discriminating about what you install on your site.