if there is no internet

Then we would be in roughly the same state as we were in the 1980s.

For those too young to remember, some things we would have to return to:

*Banking in person at a branch
Bank deposits, transfers etc taking around 5 working days to complete as opposed to instantly or the same day.
*Back to being paid cash or cheque as BACS relies on the internet (see above).
*Want to send a message to a friend? SMS, Snail mail, or pick up the telephone.
*Want to play a game with someone — you'll have to be in the same place.
*Shopping trips become a thing again for everyone (groceries).
*Prepare to spend a lot of time walking/driving between shops to compare prices (then going back to the first store as they had the best deal anyway).
*Kids might actually have to knock on their friend's house to see if they can “come play".
*Want to catch the latest episode of your favourite tv programme? — you'll have to see it when it's broadcast or set your recorder (and hope there are no last-minute schedule changes).
Binge-watcher? Yeah… wait for the DVD/Bluray release.
*Having a discussion in the pub? — good luck backing up your arguments, no Google!
*Libraries become popular again for people wanting to know stuff.
*Conspiracy theories take a nosedive as the trolls can no longer spread their nonsense quite so readily.
*News? Well… there are 24h channels for that I guess, but you won't be getting Twitter/Facebook/Online news provider alerts with the latest headlines.