Social Proof Section (HTML + CSS)

Hello community, thank you for taking the time to view my code, I hope your eyes don't hurt that much.

I would like to know,

1. How can I improve the background images positioning or should I change anything regarding their size or direction?

2. How do I improve positioning of items in a responsive mindset without over utilizing media queries. I believe I can clean my code with better a better use of CSS Grid specially with minmax values.

3. Do you believe that setting a font-size to 10px in the project is a good practice, to have an easier multiplication of rem units?

Once again thankyou for visiting my code and helping me improve in this daily journey to becoming a better developer.

Hope you have a great day!!! :)