How can I reduce checkout anxiety for first-time customers?

As an e-commerce business owner, I'm struggling with high cart abandonment rates, especially among first-time customers. They seem hesitant and nervous during the checkout process, often leaving before completing their purchase. I've noticed that potential buyers get overwhelmed by complex forms, security concerns, and uncertainty about the buying experience. I need actionable strategies to make my checkout process feel more reassuring, transparent, and user-friendly to convert more of these hesitant visitors into actual customers.