Extract 500 YouTube MP3s

I have roughly 500 music videos saved in my YouTube Premium library and I need each one converted to an MP3. The task is straightforward: pull the audio, keep it at standard quality (128 kbps), and deliver the files with no additional metadata... (Budget: €8 - €30 EUR, Jobs: Audio Editing, Audio Processing, Audio Services, Data Entry, Music Production, Sound Engineering, Video Editing, Web Scraping, YouTube)