Give thanks to your creator that you only sold 1 contract. Short puts have been the death of many traders. Take your medicine and move on.
It is almost criminal how short puts are "sold" as a trading strategy by advisories, newsletters, books and various other uneducated sources and how many beginners make money at first and think they found the holy grail and then get their cheeks clenched. I have had many conversations with beginners where I could NOT convince to abandon naked put selling for
"income" and just had to walk away knowing the crash was coming and I could not do anything to stop it. Sometimes people have to learn on their own.