Eh? 30 years ago would be 1994. Most people did not have internet in 1994.

But let's use 10 years: you absolutely could get by without internet 10 years ago. It would have been a bit of a hassle for a few things, but internet access wasn't needed for lots of every-day basic activities like parking a car, ordering in a restaurant, using tickets at a concert, etc.

Also: it was easy to use internet at a library, often at zero to no costs. You didn't need to have a personal device only used by you.