@sandrobilbeisi is correct that you loading of the carousel is slightly incorrect.
It should look like:
@sandrobilbeisi missed the closing angle bracket.
So, a couple of things - the owl carousel code needs to be loaded after jQuery. Also for this to style correctly you need the rest of the Bootstrap assets. I didn’t realize, but development/support for owlCarousel has been discontinued. @sandrobilbeisi is correct that they recommend switching to tiny-slider.
Digging into the code, there is some problems with indentation for the last couple of items.
I would recommend that you switch to tiny-slider and walk through a simple tutorial first: How To Create A Tiny Slider Carousel | Dilshan Kelsen
Once you understand this, you can work up to the more complicated example you are trying to create.