2. Never upload your seed phrases online or take screenshots of it.
Regarding this, some or most non-custodial wallets would not allow you take screenshot of your seed phrases in order to discourage you from storing it on your device storage or immediately uploading it online which is a bad security practice. I recently tried to screenshot seed phrase from the mobile version of an electrum wallet and it was not possible. This way users are reminded and motivated to store it offline and securely. Carrying it around is a very bad practice.