I would particularly recommend Lindsay Ellis' series "The Whole Plate[0]," a multi-part primer on film theory presented through the analysis of Michael Bay's Transformers films.
[0]https://www.youtube.com/watch?v=PRXI__Wixas&list=PLJGOq3JclT...
Unfolding Ideas – https://www.youtube.com/watch?v=dPHPNgIihR0
ContraPoints – https://www.youtube.com/watch?v=qtj7LDYaufM
Philosophy Tube – https://www.youtube.com/watch?v=qihG6AGjkRk
Lindsay Ellis – https://www.youtube.com/watch?v=8FJEtCvb2Kw
Innuendo Studios – https://www.youtube.com/watch?v=agzNANfNlTs
HBomberguy – https://www.youtube.com/watch?v=CnPOQr1pxY8
and so on. And it seems like it's only in the past couple of years that many of these channels have reached their current levels of artistry and production value.
Most stuff on YouTube is trash, but there's plenty else to watch.