1. I don't understand how did you lose $3000 (already by Friday) on the AMZN 1510 Put exp March, when that put was never worth more than $300 in the last few days.
Unless you've got 10 of them, or your broker (Plus500) sells $300 puts for $3000?
2. Time is money, so if you're still in that trade, you can try replacing your naked put with similarly priced LEAP put exp January 2022. For example replace 2150 March put with 1800 put exp Jan 2022, which seems to be similarly priced. Then you'll have plenty of time to recover, pray, or work 3 jobs to save money for 100 shares of AMZN in 2 years.
Though not sure whether that broker supports LEAPs, as they mainly specialize in CFDs?
And this may not be your best option, just an idea.
You’re suggesting that he short a 2Y put?