Since the budget available to me has increased (a little more than 500 euros), I closed the old discussion and created this one. Premising that I am a beginner who has never laid hands on a piano, what I am looking for is obviously a 7-octave piano with keys that are as close as possible to an acoustic piano; if it comes with furniture/cabinetry that's better, but it's not indispensable, so I accept various and more advice possible, thank you!
I would go for a good used one; in my opinion, it would be better to find something of higher quality at a good price, though we are still looking at around 600-700 euros as an average price. A good brand for digital pianos could also be Orla; my ex had one and I must say it was very easy to manage and had a good sound, although I think she spent more. It also had the cabinet, I believe she spent about 800 euros; anyway, it's a good brand, then clearly it depends on tastes, you have to like the sound. Also, it is advisable not to prioritize keyboards that are too light; look for one that has a good consistency, this will allow you to have a better grip on the key and train your hand to play more correctly.
Before making any purchase, make sure it works correctly by repeatedly playing every key; with digital pianos, it often happens that dust and humidity wear down the mechanism and some keys sometimes do not sound.
Unfortunately, I can't tell you the precise model names... Happy shopping!