guys help me please, I lost the semux wallet from the computer, each time the program invites me to make a new wallet ,but my old wallet is lost, how do I fix it, so that the wallet does not disappear every time? thank you very much in advance

Im not sure I understand. Once you create a new wallet, does it disappear as well? If so, then there is something that is messing up with your computer, probably an anti virus. If not then your wallet.dat file cant be located by the client program. If you have a backup, copy it to the semux folder and make sure the name is wallet.dat. If you dont have a backup then Im afraid your wallet is lost and cant be recorvered.