can't install my adobe creatine appliactions with my mac book(illustrator/after effects/phtoshop....

If your macOS is an older system, you will need to acquire a new computer to run a current Creative Cloud version. That's why it is important to know your OS version. 

if you have trouble downloading the cc desktop app or you see an error message when trying to install, make sure you have a compatible os (https://helpx.adobe.com/creative-cloud/system-requirements.html), and use the alternative download links at page bottom here, https://helpx.adobe.com/in/download-install/kb/creative-cloud-desktop-app-download.html

Can you please share your system specifications with us? 

The first thing you need to do is to install the “Creative Cloud Desktop App” from there you can install all the apps you need. Please post screenshots of any problems you encounter.

Refer to this Adobe help page to get you started with the installation process: https://helpx.adobe.com/download-install/apps/download-install-apps/creative-cloud-apps/download-creative-cloud-desktop-app-from-web.html