Lost key for Fiat Ducato Lost Between Campcite Polari and Monsena - Rovinj, Istria, Croatia

I have no images but I will try to describe the best as I can. I lost my keys while riding my bike going towards the city center (from the bus stop tecnologiiainstitut to the kvartal comercial center). I had them in my pocket so I guess they would fall on the street and I didn't notice. They were 1 key attached to an identification blue tag with the number 603 and a plastic door access and a 1 key attached to a white identification tag too (I think the brand of one key was ASSA) but I'm not sure. I also lost a white access card with small blue letters at the bottom. Thank you if you know anything about them.

I lost my keys yesterday evening between 8-11pm somewhere around Budapest, Ntak: Sz19000370, Akácfa u. 1-3, 1072 Hungary. There were around 6-7keys with a small red keychain and a 4edge key.

The keys have a red arrow, a "J" from Venice and a Lego Lama on the keychain

I have lost keys at the fountain in Budapest Citizens' Holocaust Memorial.

Black leather key organizer from orbitkey with 3 to 4 keys