So what will you do if you survive after the war to start back your financial struggling and your crypto investment journey. Or can you get the coins back?
There's nothing you can do. If you have neither the wallet file nor the seed phrase, there is no way to recover the wallet.
It's always recommended to keep multiple copies of your seed phrase in separate places.
You can consider graving your seed phrase on a stainless steel instead of a writing down it on a paper for more security.