Gonna echo the other folks here - heroism does not require perfection. Every one you can think of as a hero has a flaw (or several), big or small.

The upside to this is that heroism is accessible to almost everyone. Any opportunity you have to do the right, but difficult (and tbh sometimes not all that difficult, perhaps just uncomfortable or risky), thing is the chance to be a hero to someone in some respect. The downside is that people you may admire as heroes, when you meet them as just a person, can sometimes be disappointing.

The only flawless heroes are superheros (and even then, few are written about like that these days). Think about that prefix- how are the terms superhero and supernatural alike?