Try to reframe how you think about a story, remembering that a narrative tends to be about some kind of important change. It's the story of how something or someone came to be how it is. So whoever your character is at the start, or however the world is, or wherever they are in the world, won't necessarily be the same at the end of the story,
Another thing which I like to do is not to think in terms of "flaws and virtues", I think of traits as being mostly neutral. Like a story about a person with a hot temper, it's not that they need to be cured of having a hot temper by the end, it's that they need to learn how to harness and control their anger to turn that passion into something constructive. If you think of characters as having "flaws" that need to be cured, you'll always end up with characters becoming boring by the end of the story. I personally think it's a lot more fun to read the story of a character who starts out as a grumpy misanthrope who hates everyone and makes people's lives miserable and ends the story as a grumpy snarky person who may have a negative outlook on life, but directs their snark and annoyance at stopping bad people from ruining everyone else's day, than to read a story where by the end the grumpy, snarky person is all happy and optimistic and nice.
Like I don't hate my protagonist, Rekki for being impetuous, or for how she wants a simple solution to things, or taking way more than her share of responsibility, because those are things that aren't always flaws. In some cases, she's a liability who rushes into things, doesn't think things through and she can be self-involved, but those same traits make her brave, able to make hard decisions without hesitating and willing to be held accountable and to try to make amends for bad things she's done. She's a complicated person who has done bad things, but isn't necessarily beyond redemption or being a hero. I don't want her to magically lose her hot temper or her no-nonsense "try punching it, that always works!" approach, because if she lost those traits, she wouldn't be Rekki any more! It's more like, she learns to use those traits more positively.