Thank you for reaching out to the Samsung community! We would like to inform that individual app is not lock in secure folder. You can uninstall the application from the secure folder or you can uninstall secure folder from secure folder>>3 dot>>settings>>uninstall. All the secure folder data will be move out to the initial place.
Be sure to hit ♡ when you find an answer that works for you. For further assistance, you can get in touch with us via Live Chat option by following- http://livechat.support.samsung.com/Customer_new/IN. You can also connect us via Samsung Members web community by following mentioned url-https://community.samsungmembers.com/en_IN#/
