I used to have the same problem with naming characters; I could never find names that I like! Now I have a list of hundreds of names that I choose from and I always add to it whenever I come across a random name I like somewhere (in books/movies, on the news, in my yearbooks, etc). :p They really add up if you keep adding over time! I'm not sure what your characters' personalities are like or where the setting is because that can really help figure out a good name, but here are some of the ones I have.
For boys: Adam, Adrian/Adrien, Aidan/Aiden/Ayden, Allen, Aras, Aren, Asher, Athan, Auberon, August, Auryn, Avery, Blaine, Blair, Blaise/Blaze, Blake, Brandon, Brendan/Brenden, Brighton, Brody, Cade/Kade, Calixte, Cameron, Carter, Cerulean, Christian, Cody, Colin, Conner/Connor, Corbin/Corbyn, Corey/Cory, Damon, Dane, Deven/Devin/Devon, Dominic, Dylan, Emmett, Euan, Evan/Evyn, Favian, Felix, Finlay, Finn, Gabriel, Garett, Garrick, Gavin, Halifax, Halle/Hally, Harlan, Harold, Hunter, Indigo, Indio, Isen, Isler, Jace/Jaise/Jase, Jackson/Jaxon, Jaden/Jaiden/Jayden, Jaime, Jaisen/Jasen/Jason/Jaysyn, Jalen, Jamal, Jamie, Jared/Jarred, Jarvis, Jaylen, Jeremy, Jerome, Jett, Joel, Jordan, Justin, Kaden/Kadyn/Kaeden/Kaiden, Kael/Kale, Kaius, Keagan, Keiran, Kendall, Kennedy, Kenneth, Kenny, Kensington, Kolton, Kurt, Kyson, Landen, Logan, Luca, Lucas, Lucian/Lucien, Luken, Marshal, Micah, Miguel, Nathan, Nico, Nigel, Noah, Oliver, Owen, Raleigh, Ralen, Ransom, Ravan, Raven, Ray, Rayden, Raylen, Remington, Renden, Revin, Rico, River, Roel, Rouvin, Rowan, Ryder, Rylan, Ryland, Sage, Scott, Seth, Shane, Shaun, Silas, Silver, Spencer, Tallen/Talon, Tanner, Teagan, Trevor, Tristan/Trystyn, Tyler, Uriah, Viridian, Zane
For girls: Abigail, Adeline, Adriana, Aesta, Aimee, Ainslee, Aleisha, Alexa, Alexis, Allie, Amber, Analee, Anastasia, Andrea, Anessa, Aurora, Bianca, Blaire, Bridget/Bridgit, Brittany, Brooke, Brooklyn, Caitlin, Callie, Callista, Camille, Carla, Carli, Carmen, Carmine, Caroline, Celeste, Chelsea, Chloe, Clarisa, Clarissa, Corinne/Corrine, Courtney, Cynthia, Daisy, Danica, Delaney, Elaine, Emma, Erica, Evangeline, Faith, Faustina, Faustine, Felicity, Fiona, Francine, Gabby, Gabriella, Genevieve, Gisele/Giselle, Gloria/Gloriya, Grace, Hallie, Hanna/Hannah, Hyacinth, Irene, Ivy, Jacqueline, Jane, Janessa, Janet, Janice, Janine, Jazmine, Jean, Jess, Justina, Justine, Kadie, Kaelyn, Kaia, Kalila, Kate, Katia, Katie, Kay, Kaylee, Kelly, Kelsea, Kimberly, Kylie, Laurie, Lexi, Lisa, London, Lorraine, Lotta, Louise, Lulu, Luna, Lylah, Lynnie, Madeleine/Madelyn, Mandy, Marina, Miranda, Misty, Monica, Monique, Morgan, Namaka, Natalie, Natasha, Nicola, Oceana, Paige, Pauline, Penelope, Portia, Quiana, Quinn, Rachel, Raelynn, Rebecca, Regan, Rita, Rory, Rosemary, Rosie, Ruby, Sabrina, Sadie, Sally, Samantha, Sarah, Savannah, Serena, Sheila, Sierra, Skye, Skylar, Solana, Sonja, Sophie, Stephanie, Summer, Tabitha, Tanya, Taryn, Tatalina, Tessam Tina, Tori, Valerie, Vanessa, Vera, Verity, Violet, Viva, Vivienne, Winnifred, Yolana, Zelena, Zena
Hope that helped a bit! If you want some surname suggestions, I have some of those, too. :)