I would get a premium trial and share any playlists on the account you don’t want to lose for the development of your tool. Worked for me when exporting my 4000~ song playlist.

Semi-related but it drives me crazy that there can be non-censored swearing in a video but the subtitles have it censored. Imagine being punished for being deaf

I have around 5000 songs in a playlist. Anyone got an idea of how to migrate them to just local .mp3 files or something?