WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. Features include a plugin architecture...
First, check what is taking up space: website files, emails, databases, logs or backup archives stored in your account. Depending on the service, some categories may have separate limits. Running out of storage can prevent file uploads, updates or incoming email.
Download and check a copy of important data before cleaning up. Remove only files you have identified as unnecessary, empty email trash folders and set an appropriate log retention period. Do not delete system files, databases or your only backup copy. If your storage use is necessary and keeps growing, consider a plan with more space.