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 different locations.
For more security, you can consider graving your seed phrase on a stainless steel plate instead of a writing it down on a paper.
I did with your way when saving my seed phrase, I use several placed not only saving seed phrase document but also I use two mobile phone and one computer to login with my wallet. When one place of saving my wallet loss access still have back up or recovery on another place of my mobile phone or computer. Its really important did when having important wallet access not only secure with saving seed phrase but also try to use several place access with our wallet.
Keep use your mobile phone with full of your controlling, don't try with your family mobile phone some time access by the other and get loss chance with our fund.