Manually downloading 50 videos one by one is archaic. The best tools allow you to paste a playlist or channel URL and automatically download all videos, respecting the "6-bus" parallel limit.
: A Chrome extension that allows you to create a personal video list and stream content directly to your TV via Google Chromecast . 6buses video downloader best
Unlike some tools that compress your files into a pixelated mess, 6buses preserves the resolution you actually want. Manually downloading 50 videos one by one is archaic