Ah, sorry about the error! I guess it could use some optimisation. It will remain free for the users. I haven't thought about monetisation but for sure it won't be on the final user. Either ads or sponsored places by companies etc. Similar to TripAdvisor
I have a GitHub action that runs every night. It uses Youtube API to fetch all the new videos in a curated list of channels and playlists, then selects some of the new videos and creates the schedule.