How to attract users to my SaaS? What am I missing?

Hi everyone,

I developed a SaaS called Reviup (https://www.reviup.com) which is a customer feedback software to collect reviews from customers through surveys, and also display the customer testimonials on the user's website or app.

I developed a landing page at https://www.reviup.com and initially, I only had paid plans (two). I created social media accounts on Facebook, Instagram, and a YouTube channel, did several posts on these accounts and created 2 video tutorials for the YouTube channel, but I couldn't get any sign-ups for my SaaS.

Facebook: https://www.facebook.com/reviup.official

Instagram: https://www.instagram.com/reviup.official

YouTube: https://www.youtube.com/channel/UCIK1l2JVyPvx4vPBnBO2ceg

I also paid for an email marketing platform subscription for a month and sent an email to over 4,000 businesses, but although some users entered my website (according to Google Analytics), I couldn't get any sign-ups.

Recently, I decided to offer a free plan and use Google Adsense as a source of revenue, where I would display ads in the back-office app (https://my.reviup.com) for the free plan only, but it seems Adsense is not suitable for SaaS websites [1] as Google didn't approve my site due to "Low value content". I am still offering a free plan since I really want sign-ups.

What am I missing? Is this a marketing issue? Or is my product not good enough not even for free?

Thanks!

[1] https://support.google.com/adsense/thread/158773106?hl=en