Here’s the true frum view of end-of-the-world prepping.
Sanhedrin 98b:
Rabbi Elazar’s students asked him what a person should do to save themselves from chevlei Moshiach (“the birthpangs of Moshiach” – the upheaval that there will be in the world before Moshiach’s arrival). He answered that they should be involved with Torah study and g’milus chasodim (acts of kindness).