Forget the tragic backstory, that's the problem. Most people aren't walking around with a grand opera in their past. Give them one weird hobby, a dumb grudge against a fast food chain, and a sibling they're kinda competitive with. That feels real. A month is too long to be stuck on one person who doesn't exist yet.
You say most people don't have a grand opera in their past, but you're selling real life short. Quiet tragedies are everywhere, they just don't make a big show of it. Dismissing that depth makes characters feel fake, not real.