If one private key and diffirent address. Can it possible?
Actually its the other way around.
A private keys (ECDSA) has 256 bit -> 2^256 possible private keys.
An "address" is a 160 bit long hash -> 2^160 possible addresses.
So on average there are 2^96
(256-160) private keys which correspond to one address.
Sounds like a lot. But nothing someone should be concerned about.