Advice needed!!

Hey, I recently made a SaaS and I deployed it, but even when new users come, they just instantly leave, and I don't know if there's any problem with my SaaS and because of that, I did not even add a payment or monthly subscription thing in my SaaS that make me money, right now my SaaS is a free and i am not making any money and when i tested out SaaS myself it was ok and i did not see a problem and i still dont know why people are leaving  

Author: Lazy_Engineering_11