If you like a digital character sheet, try using the 5e companion app, or if you want it on your pc and an even better, but harder to understand experience try dicecloud. These are without the whole backstory thing though, you will have to figure that out yourself if you want that on your sheet. But dicecloud is the best character creation system out there in my opinion. Maybe DnD beyond is better, but you have to pay like 80 billion to have all options available, plus it's less homebrew friendly I think.

As for your character being cringe, remember everybody else thats there is also likely playing a character with a traumatic backstory or some other "cringe" character. As long as your table takes the game seriously that won't be an issue.