This is a great video to help demonstrate how hard and rewarding it can be to make a movie. A lot of times things that you may not like about a movie are not intentional and the director may not like it either. Other times obstacles can create happy accidents that improve a film in ways unforseen.
David F. Sandberg created this great 5 min video breaking down one scene in Shazam! and the problems presented to him during the shoot. I first saw this awhile back but I am just now getting around to posting about it.