So don’t be trapped. https://theporndude.com/useful-software has the best downloading software. Just download JDownloader from this site. I just installed JDownloader because of this post (and I needed a DL manager). It had options during the setup/install process to install additional software but I simply unchecked the accept boxes.
There are no extra software or malware on my computer after installing/running JDownloader. Just make sure to decline the additional software during setup and you should be good.