I need help for Optimization

I have a health website.

The features of my website are as follows:
I installed it with WordPress.
I did the SEO optimization with the "Rank Math SEO" plugin.
I installed the "Internal Link Juicer" plugin for internal linking.
I installed the full version of the "WP Rocket Premium" plugin.
I installed the full version of the "Advanced DB Cleaner PRO" plugin.
I have 1085 articles in 20 categories on my site. All of my articles are original. I wrote all of them myself.
I created about 35 "medical calculation programs" in PHP for important health topics.
I score 100 full points on "Google PageSpeed Insights" analysis. So, my site is technically fully optimized.
I score 100 full points on "gtmetrix" analysis. So, my site is technically fully optimized.
I optimized all the images on my site. I reduced their sizes and optimized them for SEO.
I shared all my articles on social media using the "Blog2Social" plugin.
Besides plugins, I got backlinks from dozens of social media pages.

Despite all these efforts, there has been no significant increase in the number of visitors from Google search in the last 6 months.