Illustrator version 2019 o 2020

For CC2019 you can try and download the installer from the following link

https://prodesigntools.com/adobe-cc-2019-direct-download-links.html

The downloads happen from Adobe servers so it's completely safe and legit. Do note that the download links might not work if Adobe closed these servers, as they no longer support anything other than the latest two version of CC Apps

For CC2020, you will have to contact Adobe support and ask for the installer. They might provide one if they have it available, there is no other way to get a genuine copy of this version. To contact support follow the instructions given below
1. Go to https://helpx.adobe.com/contact.html?rghtup=autoOpen
2. Wait a bit on the page that opens up, it should automatically open a chat popup. If that does not happen then look for a call out/chat icon at the bottom right, click over it and the chat popup should open
3. In order to talk to a human type "AGENT" in the chat box
4. If you are not able to get to the chat window, then disable your adblockers, firewall, enable cookies/scripts on your browser. If it still fails then change your browser/machine/network.

P.S. Be mindful of answering anyone who sends you a private message. See the following for more information about scammers
https://tinyurl.com/y7cfrr7y
-Manan