Aely, I am almost the same age as you, and a widow too. Unlike you though, I am never bored and often find I run out of day before I have done everything I planned.
I do spend a fair bit of time on my iPad, I enjoy researching things that interest me. I don’t play games as such, but there is a jigsaw section on there and I do those sometimes. I get visits from family too, not every day, but frequently because they live within 10 miles of me.
My main, and much loved, hobby was cross stitch.. I did that every day for many years, and my family used to say I was addicted, and never without a project on the go. When my husband was very ill just before he died, I sat with him all day and stitched constantly. It got me through the hell of knowing how ill he was. The strange thing is, he died five years ago and I haven’t touched my cross stitch since that day.
I do feel that maybe I could stitch again but I don’t know whether my eyes would be up to the task now.
I did see an article in a magazine recently about a firm that helps you write your life story and that is something I am considering, but feel it might be boring. That said, I told my granddaughter about something that happened in my past the other day and she was fascinated, so I might consider that.
So you see, there is plenty to do. You just need to find something that suits you. Good luck.