My weekend side project just took over my life. It needs "actual marketing" expertise. As in, I know how to set up search console, semrush, and I know decent SE

My weekend side project just took over my life. It needs "actual marketing" expertise. As in, I know how to set up search console, semrush, and I know decent SEO concepts to grow organic SERP performance. I am coming up the charts there. However, I have friendly investor interest. The only place I can imagine spending money on this project is on Google Ads. I have no real idea of how to create and manage Google Ads these days. So, who do I hire? Does anyone have any recs for what I should do? Is there a service, or a go-to consultancy with a small minimum spend requirement?