First, you might be careless with the seed phrases and someone close to you might have discovered them unnoticed to steal from you.
FYI, OP already stated his words/seed phrase doesn't even work.
But in case electrum confirms to you that your wallet was indeed hacked, then there is nothing you can do as Bitcoin wallets are also susceptible to hacking.
Aside from what @nc50lc said, technically most devices are susceptible to hacking.