Fix My Shopify Store

I got someone from Fiverr to make me a store and it's poorly done in my opinion.
I'm not getting any sales and the items he picked seem to just be some random things and the item description isn't really good.
This is the store.

trainingsmartstore.com

So what I need is for someone to help me with everything to get this to actually sell products, like better products, website, apps, and coach me through the process of keeping it running.

Thanks, Stefan