Can I offer more than one payment gateway at checkout?

Yes. Turn on the gateways your plan includes under Settings → Store Settings → Payment Gateway (the Online Payments plugin decides how many you can use). Only the ones you enable appear at checkout.

WCart supports Stripe, PayPal, Razorpay, PayUmoney, Cashfree, PhonePe, Shiprocket Checkout, Adyen, Checkout.com, Paystack, PayHere and PesaPal, plus Cash on Delivery, Bank Transfer and UPI. Make sure each gateway is fully set up and supports your store's currency, or it won't show at checkout.