Granted, now you start at level 20 and go to 1, though abilities and power are the same as if it was not reversed.

I wish that my Curse of Strahd character gets killed by a terrifying monster.

The deva's flesh golem moves several swords off the rack holding them while trying to put a mirror in a better place and later, when your party sneaks in trying to learn more about what's going on your character trips and falls into one of the swords, stabbing them through the neck and instantly killing them.

I wish there was an effective way to multiclass as a Wizard/Sorcerer.

There is!

I wish for more spells that would fit my Warlock's Theme.

Granted, they exist but not on the warlock spell list.

I wish that my computer could run heroforge on max and baldur's gate 3.

It will! For anyone using it but you.

I wish I could afford to get all the HeroForge minis I've designed.

Granted. You're given a free voucher for all of the HeroForges you've designed, but wait! Your data was corrupted and all those designs? They've been lost!

I wish I was better at fixing flat tires. 

No one is better than you at fixing flat tires. 2d tires. Good luck using your skills!

I wish for game balance to be better

Granted. But the better balances comes with hours of calculations. 

I wish this one bird outside my house would shut up.

It does, but then every other bird within a mile of your house seeks to be as annoying as possible

I wish to be able to unsee and unhear things.

Things, not people. Youl always remember what they say or do.

I wish for the ability to hover magically.

Granted! You can cast hover as a 2nd level spell, but you only have 1 spell slot

i wish for the ability to duplicate anything

You can duplicate anything, by permanently turning yourself into it.

I wish for you to duplicate my television

Granted. Double the TV double the cable bill.

I wish I could get the fry time perfect on country-fried steaks. I always seem to go a tad too long.

You lose the ability to properly fry anything else

I wish for a safe, delicious bowl of pasta.

The pasta is wonderful and the garlic bread kills you.

I wish I cold tell the rules lawyer in one of my campaigns to shut the hell up every time he halts the entire session for 5 to 10 minutes to argue about something literally nobody else was saying anything about.

Granted. Now instead of speaking he comes prepared with 100-page documents to make his argument, which you are expected to read in full. 

I wish D&D&D&D was a real law firm.

Granted. Do you want it to be in Limbo, The Abyss, or The Far Realm?

I wish to be Level 20.

you are, in the world that i said earlier where the numbers are reversed

I wish I could cast true polymorph on myself

Granted. You turn yourself into a newt! (Don't worry: you get better.) 

I wish I knew more Monty Python quotes. 

Granted, you did, you just forgot most of them except this one: She turned me into a newt! Got better.

I wish to go into the forgotten realms dnd setting.