Bitmover,
a new wallet with the same seed?!
Yes. Your seed can create almost unlimited wallets with different derivation paths.
There are a few possibilities here.
1 - If you have the wrong seed, your funds are lost and there is nothing you can do.
2 - You have the right seed, but you could be looking in the wrong derivation path.
For example, you don't know if you have a BIP39 seed or a Electrum seed (this is why i told you to check and uncheck BIP39 when creating a new wallet, and try to find the address there).
Or you may have miscliked in the derivation path, or somehow created a new account without knowing it (this is why I told you to try a few m/44'/0'/1'/0).
The last digit has to be 0 or it can variate as well?
The last digit is for change address, and your transaction didn't generate any change, so there is no need to try that, AFAIK.