I want a personal CRM

Hey guys! So I use to work in the car business and loved the crm that my dealership used to create better business! I left and have been working at Kay Jewelers for roughly 4 years now. I am a top sales consultant in the company. My company CRM really isn't a crm. It's more like a appointment booker. That's about it. I want to truly thrive and make the best followup system possible. What CRM app can I get to achieve this? I want to go from great to beyond excellent at my job. I truly love sales and want to have a tool to truly put me a step above everyone. What app would you recommend?