Legitimate software archives often keep clean copies of installers from 2015-2018. Look for versions 3.9.x of popular tools before they added "Studio" or "Pro" modes.
Before you look for a specific version, it helps to understand the common reasons users regress: old version youtube downloader
A massive repository for version histories of popular tools like YouTube Downloader HD . Legitimate software archives often keep clean copies of
Occasionally, developers remove popular features (like specific batch downloading or local file management) due to platform policy changes. like 4K Video Downloader
It sounds counterintuitive. Usually, software updates mean better security and faster speeds. But with downloading tools (specifically the desktop software kind, like 4K Video Downloader, JDownloader, or youtube-dl forks), "new" often comes with baggage: