Very sorry, you feel isolated．
Have you ever had walking rehabilitation or balance physiology?
I have Vertigo sometime dizziness prolonged that makes difficult to walk steadily but have physiological sessions and Aqua Pilates improved my condition improved.
Why not trying to improve your walking abilities?

I’m somewhat in your boat. Friends disbanded around Covid while I was having heart bypass and now surgery for bone infection in lumbar area. I can still drive but don’t feel comfortable trying to go alone to places I would normally drive to. Feel very compromised. Family is suggesting retirement community so there would be people around.

@rca- It was my experience with my husband that if I gave a great big smile to someone with a "tude" they would change their "tude" toward my husband being slow, or looking different. Attitude is a powerful thing! You can use it to your advantage and change the way people think and react.

If you don't live too far away from the beach perhaps you can hire a car for the day? Do you belong to any clubs that have other people who might want to join you?

Merry

Avoiding the rest home.
1) Find a caregiver to come over and take you to do beach?
2) water therapy. physical therapy.
3) a hobby
4) call old friends
Just a few thoughts … I live your advice about a fall device… I will do that. Thanks. Be safe.