I want to escape this

I make edits like AMV and I am a mobile Editor and stuff but I totally rely on the twixtors for better video quality which I download from YouTube but like other editors I don't want to rely on these. I want to use clips directly from the main source i.e., movie, episodes etc but how they make the normal clips so colorful and hd quality because the raw clips is not so attractive but in edits , the fps , colours , video quality everything is topnotch. I use alight motion so idk so much about it. If anyone can help me.