The best earrings for round face are the long and narrow earrings. You must create an impression that your face isn’t too round, so thanks the vertical lines earrings because it can make your face look thinner.
Here are some good earrings for round face that I found on Amazon

Modern Elegance: Sterling Silver Designer Inspired Interlocked Wave Dangle Post Earrings with CZ Diamonds
Price: $34.99

14k White Gold Swiss Blue Topaz Teardrop Earrings
Price: $69.99

Delightful Chic: Sterling Silver Celebrity Style White Pearl CZ Diamond Dangle Earrings
Price: $29.99

Yellow Gold Plated Sterling Silver Sapphire and Diamond Accent Flower Dangle Earrings
Price: $24.99

Kit Heath Long Twisted Leaves & Pearl Earrings
Price: $39.00