I'm glad to hear you're doing much better now. I was getting worried that something was wrong. Its going to take time for you to get back to feeling like your old self. As far as the low energy and lightheaded spells, its probably from one of your medications. I've been on blood presssure meds and beta-blockers for a long time. They lowered my energy level and the blood pressure medicine made me dizzy. I don't know what meds they have you on but I'd take a look at the side effects.

Its good that you have a stoic frame of mind because life isn't kind when you get older. Its hard to take that no one would miss you or care if you were gone but thats how it ends up sometimes. You should try joining one of those Meet-Up groups. My sister, who is a little younger than you, has made a lot of new friends from all walks of life going to those. She joined one where you meet and play pickleball once a week. Its all people that want the same thing you do. To establish friendships.

I post political stuff or cultural stuff that I hope will generate a discussion. It doesn't always happen but its great when it does. Its hit or miss.