Adobe does not offer a permanently free version of After Effects. The only official way to use the software for free is through a 7-day free trial Trial Features : The trial is the official full version
If "Other Versions" does not show CC 2020, Adobe has deprecated that installer. Your only option is to find a bootleg (dangerous) or use an alternative. Adobe After Effects CC 2020 Free Download
Many websites promise a direct download but instead deliver adware, browser hijackers, or survey scams. Others bundle the installer with Trojans disguised as "crack files." Adobe does not offer a permanently free version
In the past, Adobe sold perpetual licenses (CS6 and earlier). CC has no perpetual licenses. However, some third-party resellers sell "transfer of ownership" for older CC licenses. Be very careful—most are scams. Only use Adobe-approved resellers. Many websites promise a direct download but instead