there is no “support files” folder

[rubyyyy]

I have Adobe After Effects 2021. I do not have the "Support files" folder and because of this there is no "plugins" folder. I have no restrictions on hidden folders. I tried everything, but I never found where to download plugins. Help please

[Mylenium]

Without any system info we can't really tell you where to look. That said, as far as it goes AE will load any plug-ins in it's program folder. The various sub-directories are really just a means of keeping things organized. So you could just create a new folder and drop whatever plug-ins in there.

Mylenium 

[rubyyyy]

thanks

[ShiveringCactus]

Does this video help:

In a nutshell, you need to find where you have installed After Effects.