You can add a dataset found under the Content Manager tab (6th tab from the bottom).
Read more about adding and configuring a dataset here: https://support.wix.com/en/article/displaying-database-content-on-a-regular-page#5-add-and-configure-a-dataset-1
Shan even the "add dataset" funtion is missing the button
This forum is dedicated to Corvid. For questions that are not related to code you can contact the Wix support team. You'll get better help for your problem there.