I accidentally didn't respond to someone who was interested in my apartment
Why? Don't you want to sell your apartment?
I was not interested in renting it to them because I don't like the way they look. I said it was an accident, but I really knew.
It can be hard to find someone acceptable to rent your apartment, but you shouldn't have prevented this person from finding a home just because you didn't like them. Next time, be more tolerant of people when deciding who to rent to.
What am I supposed to do now? I'm fucking desperate for a place. I will agree not to be so selective for next time.
Well, you can try and contact the person again to see if they are still interested and apologize for declining them the first time. If you can't do that, try to wait for any potential renters but make sure that this time, you're not discriminatory as it is illegal to do so and you can be fined by the government.