It’s ok to leave the names up in the air for a while.
Get a bit more of your plot and setting down on paper, and then come back to it when you have a few more ideas.
When you write, it’s important to choose words and names to convey your intended meaning. Like, if you were writing a horror story, you would choose dark and gloomy words, rather than bright and sunny words. You can use words to your advantage, to increase the reader’s understanding of your intended meaning, if you choose them carefully.
It’s the same with names. Once you know what your story is about, think about your characters’ roles in the story, and choose a name that gives a reader a clue into that. Even crappy stories can get some mileage out of this. Like, in Fifty Shades of Grey, the guy’s name is Christian Grey. Christian= reformed sinner, and grey= morally ambiguous. That tells us a few things the author wants us to know about the character, but it’s still a name that a regular dude could have in the real world.
Or, just disregard this completely, and name them whatever you want- as long as it makes sense in your fictional world. In “A Song of Ice and Fire,” most of the names are made up, but they follow the internal rules and logic of the series. There are patterns within regions and families, and each name seems plausible, where the character is a part of the whole. No name is way cooler than all the others.
You can be as subtle or as obvious about names as you want. I gave one of my characters a name from a short story by an author I like. If you’ve read that short story, it’s easy to guess what this character is like and how he meets his end. Otherwise, it’s a regular name that a regular guy might have.
Don’t name your character something just because it sounds cool. In fiction, every detail (should) count, and a name is very important detail. Use it to tell the readers something essential about your story.