I need the slides in my Power Point Presentation made visually coherent and stunnning

I am presenting next Wednesday. So need to have the deck complete by end of the day Monday. I have a deck that has been cut and paste from a number of other decks and so the style looks disjointed. I have attached it, but blanked out the background styles as it was too large to upload with them in. I can provide that deck too.

I am presenting at a key supplier event, Oracle. https://www.oracle.com/modernbusinessexperience/index.html
My presentation is on Oracle cloud https://cloud.oracle.com/en_US/cloud-infrastructure . So in terms of styling cues can be taken from this website.