Please guide

I am a 2023 passout. My first 3-month internship started in December 2022, where I worked as a Shopify developer using HTML, CSS, jQuery, and its own language, Liquid. I left it since I had no interest in Shopify. I was hired as a React developer, but instead, they gave me Shopify. My second internship was also for 3 months, where they assigned me React Native but paid me too little. I don't have the internship certificate for this. In my third company, they again gave me a 6-month internship with the possibility of full-time later. I am currently working with Node.js, React, Docker, and Jenkins. My internship has been converted to full-time now. What more skills should I explore to increase my package? Currently, I am earning 4 LPA. When I switch, can I show my previous intern experience as an experience? And can the internship in my current company be counted as experience?"