Old Photoshop + illustrator download

IF/When you do have a download, be sure to copy it to AT LEAST one external device
-since Adobe does sometimes remove old versions from the server
-a usb flash drive or hard drive, or write to a DVD

Hi @defaultyoza8pnhllv3,
Only the latest two versions of the Creative Cloud apps are supported and available for download. You can try and download the 2018 versions of the Creative Cloud apps from the following website. If the links mentioned on the website don't work, then it means that Adobe has discontinued providing the download and genuine installers are not available anymore. Be circumspect if someone contacts you claiming to provide an installer in such a case.
https://prodesigntools.com/adobe-cc-2018-direct-download-links.html
-Manan