Never pay down a deposit in a bank account until you have met the seller, seen signed a purchase agreement.
No serious private advertisers ask for a down payment before you meet.
Receiving an email with an in-scanned ID does not mean that you have identified the sender. You do this on the spot, when you sign a purchase agreement.
Selling my car. Price: 3900€, negotiable. Toyota Aygo 2012 year of manufacture. First owner in Serbia, the car was imported from Switzerland. Good condition. Engine petrol 1KRFE, 68 hp, consumption 4 — 6 l. Maximum configuration, 4 airbags, there is bluetooth. New front brake discs. Bought in 2023, no accidents. Sticker until June 2025. Ready for any checks ...