What is more effective: Startup Courses or Paying a Professional (i will not promote)

I created a B2B BI SAAS tool and have gotten great feedback. I am 27M NYC based. The problem is I don't know how to market. I don't know how to sell. I don't have time for cool emails and cold calls every day. I have gotten feedback from my tool through founders, collogues, strangers, family and friends. As someone who has built many things in the past this as given amazing feedback. On top of the feedback, there are very large companies who are starting to build similar tools; however, mine still focuses o