It is important to backup your seed phrase but some people said the backup is not good online but which is true because we have seen how hackers was able to see some people seed phrase online and steal their coins. But I have been thinking recently that how can people in countries with natural disaster be able to backup their seed phrase offline? An example is the flooding that occured in Pakistan like 2 or 3 years ago that submerged 1/3 of the country under water. Even if you backup your seed phrase offline in many locations, it is possible that kind of flood can lead to permanent loss of your offline seed phrase.
If you are living in a country where natural disasters happen regularly, before you back up your seed phrase or private key, you have to do your research to know the places in your country where natural disasters usually happen so that you will not back up your seed phrase or private key in those places. When you are backing up your seed phrase or private key, back it up on a flash drive and keep it in different locations known to you so that when you lose access to anyone, you will be left with plenty of options if you want to access your seed phrase or private key to get access to your wallet.