My Adope Apps are not compatible with my Mac on High Sierra

cc 2020 is the latest version compatible with your os and for those links you'll need to contact adobe support*.

if you can live with cc 2019, use the @John T Smith.'s link to prodesigntools.com

* for cc 2020

use a browser that allows popups and cookies and contact adobe support by clicking here, https://helpx.adobe.com/contact.html?rghtup=autoOpen
in the chat field (lower right), type AGENT
be patient, it can take quite a while to reach a human

p.s you can also use phone (but chat is usually quicker), https://helpx.adobe.com/contact/phone.html

p.p.s. you can also use twitter to tweet @AdobeCare

p.p.p.s. if you're contacted by anyone (via email or private message), it's much more likely to be a scammer than an adobe representative. ie, double check for an employee badge if contacted in the forums and look for an adobe.com domain in the email address if you click reply to an email. then check again and be very suspicious. any other method of contacting (or offering to contact you) is almost certainly a scam, https://community.adobe.com/t5/using-the-community-discussions/staying-safe-in-the-adobe-support-community/td-p/12919684/redirect_from_archived_page/true

Adobe now offers the current and ONE older version via the online program manager
Go here for all older links https://prodesigntools.com/adobe-direct-download-links.html
-Prodesigntools is an official Adobe partner, and the links go to Adobe, not a 3rd party site

IF/When you do have a download, be sure to copy it to AT LEAST one external device
-you should ALWAYS keep a copy (or two!) on an external device
-since Adobe DOES SOMETIMES REMOVE OLD VERSIONS FROM THE SERVER
-a usb flash drive or external hard drive, or write to a CD or DVD

I updated the macOS to high sierra