I have only one string (LPKDCybeTszimJqhwwotbEtTD5TuJfghj) of my wallet, is it possible to restore from only the string?
Nope. You need a private key to gain access to your coins. It may be in the WIF format, a wallet.dat file, or even seed words (12/24 words).
Okay my friend, thanks.