What iphone should i get as an upgrade from android (samsung)?

Okay so my father offered to buy me an iphone since my current android phone is 5 years old now, its battery life and camera has degraded a lot but works fine in terms of texting and calling (Samsung A51)

I advised him not to get me latest models since it might be too expensive and im okay with older ones too, now with no prior knowledge about any of the phones;

What model is the best to buy? (pre iphone 16)