Hello,
Honestly the video was pretty decent in the beginning. Sure a bit raw and weaker in the buildup as the scene selection was not enough to make it for the pace imo but still consistent and clean enough. However, for the second part with the more EDM sounds you decided all of a sudden to use other animes in-between, which might have helped dealing with the pace but completely broke the immersion as it's really random to see this change of style. The other scenes are also of much lower quality so yeah, it's really hard to stay interested in what's going on from this point on.
It's not hard to fix though, it would have been fine to stay with shigatsu as long as the scenes chosen were dynamic enough so keep it up!