I don't know if loneliness is more common amongst older people but I think it is harder for them to be able to do anything about it.
My mother isn't completely isolated but at 91 many of her friends have died. My sister recently died too, so that's another loss to add to the list. As noted earlier, buses have been cut to the bone and the bus stop has been moved further away, making it inaccessible for my mum. In her town, the local buses are the same ones they use for schools so the buses stop at around lunchtime if you could even reach one.
Advice on steroid tablets and injections
Our Welfare State. Is it broken?