natural disasters and wars in the future might happen and there are even some rumors that say there will be an internet apocalypse in the next few years, even so bitcoin will not be erased in the minds of millions of people, even though the internet doesn't exist, we can still transact bitcoin with systems such as SMS.
Do you mean bitcoin can still exist without the internet? I will oppose and disagree with this view. Nowadays, people are creating ways to send and receive bitcoins by SMS, but after all, the bitcoin network will disappear, and bitcoin will go to zero without the internet. How can something created on the internet exist if the internet doesn't exist? This is excessive and unnecessary bitcoin exaggeration. Bitcoin will always depend on the internet and electricity, and there will be no way for bitcoin to separate from its dependence on them.
Everything depends on the internet and electricity nowadays and so does Bitcoin, Internet and electricity has become a part of human existence. Everything is now done on the internet and we need electricity to recharge the devices we use to access the internet. We don't have to be scared of the internet and electricity seizing to exist because we'll find other means to get light and internet as we always do and the use of bitcoin will continue as usual.
The use of radio signals through sms to send Bitcoin hasn't been fully adopted but that doesn't mean it hasn't been done. Without the internet we won't be able to trade Bitcoin as that'll take away the decentralized benefits of Bitcoin as P2P will now be done physically.