I played very little of valorant and I'm really bad. I panic when shooting and using my ability. What agent is easiest for begginers and how do I stop panicking?

I feel like everybody is talking about how they deranked hard. I have not seen a single person say they ranked up this act and although my improvement is small (iron 3 to bronze 2) I'm the only one I know that actually ranked up. I can conf...