I guess maybe someone (maybe you) should have a serious talk with daughters about your need for love and companionship.
If they are unwilling to allow you to seek this on your own, certainly they should be willing to provide it to you themselves. The easiest way to facilitate this would be to have you move into one daughter's home, or the other. Of course, their children may have to share a bedroom to provide you with one. Your dietary needs if any will have to be accommodated, too, when the family does their meal planning. You should be included in at least some of their family outings. It would be rude for all of them to go places and exclude you. Of course, one more person in the kitchen, using the bathroom, exercising an option on what to watch on TV might be inconvenient. You're old enough so that your medical issues require more attention than they used to. Someone will need to drive you to those eye appointments (you know, the ones where your pupils are dilated) or procedures which require someone else to drive you home. You aren't going to have a significant other to do this, so that task will fall to your daughters and their spouses, as well.
You sound like a reasonable man . You'd be willing to help defray some of the food and utility bills and baby-sit the kids sometimes. Not all the time; after all, you raised your children, and they should be raising theirs.