when i open CC desktop app after effects is not there, can anyone help
There are dozens of threads on this. Even a Google search brings up the answer. If an app is not listed in the Creative Cloud app then your system does not meet the minumum requirements for that app. Always check system requirements before you buy.
As Rick says, the most likely cause is that your operating system is too old or is 32-bit instead of 64-bit. See the system requirements:
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