It is always a good and wise idea to keep a backup copy of your WordPress blog or website just in case it crashes or hacked. Here are a few popular and free backup plugins that allow you to not only export the content of your blog/website but also import or restore your WordPress in a new installation seamlessly as well;
https://wordpress.org/plugins/
IMPORTANT NOTICE: Before you start installing and backing up your WordPress website via these plugins, please use each plugin’s specific WordPress dashboard menu or File Manager to go to this path and remove any previously-backed up files to make new light backup packages to restore later;
/opt/bitnami/apps/wordpress/htdocs/wp-content/wpvividbackups
1. WPvivid Backup Plugin
2. Duplicator
3. All-in-One WP Migration
Notes 