I did a lot of IT community teaching with adults (generally pensioners) who realised they'd soon find life difficult if they didn't use a computer. That was around 2000 - 2015. Next, it will be awkward without using a smartphone. Once 80% or more of the population have them, they're 'mainstream'.
Now, we can shop, book holidays, research, follow our interests, browse entertainment, watch the news - and, vitally, communicate (I just love email) with these tools.
If it's just for occasional use, though, you can always use a family member's phone. Ask around and somebody will have an 'old' one to spare. We don't need a brand new one - or the latest model.
Just use it for what you find convenient. I prefer my laptop's larger screen, using the phone for texts, WhatsApp, Zoom and quick calls - oh, and for reading the meters!