I think that the style you went for is executed quite well, however personally I don't think it was the right editing style for the songs you used. I don't think the default shader with minimal colour correction fits with this song, as it's too clean and 'modern'.
The transition to that vintage footage was honestly a really cool idea, but I feel like you could have done more to make it fit in. As it was a really abrupt change, maybe you could have made the screen go suddenly black for a bit, with some film damage effects, and had some vhs inserting sound effect, to kind of 'lean into' the abruptness (you could do any number of things, that's just a suggestion). The transition also felt like it was going to lead into a second part of the video, that would bring a new theme, but you kept the same shader and editing style afterwards, which kinda felt unsatisfying.
Overall this is a really solid attempt and if you're just a bit more thorough with the process I think you'll make some cool stuff.