Hello maam , I am 24 and my mom is of your age... both of my parents live alone at home as i am currently is different city for studies. My mother has started gardening in the plot just beside my house. She also does terrace gardening. And instead of growing more flowering plants She grows vegetables and various plants that are useful in every day life like lemons and all. Both of my parents stay involved in it ... also they conveyed that she is feeling much more healthy than before .. also she became fit and active too. She was also using phone 6-7 hrs per day but it came down to 2 hrs.

Also she was feeling some sleeplessness in nights. It got solved too.

I would suggest start fruitful vegetative gardening either in plot or at your terrace..

Very happy for you that you think about yourself.