google ads shopify

I'm looking to invest in Google Ads for my Shopify store. My budget is less than $500 and I'm mainly looking to increase online sales with my ads. I don't have a specific target audience for my ads, so it will be general. I'm looking for someone to help me set up the most effective campaign and maximize my results. I already have created a google ads account for my Shopify store however I'm having trouble with conversions and analytics.